FieldDefinition

Represents a standard or custom field, providing row-based access to field metadata. Contrast FieldDefinition with EntityParticle, which represents each element of a field that can be presented in a user interface. FieldDefinition has parity with metadata type Field.

This object is available in API version 32.0 and later.

Supported SOAP Calls

query()

describeSObject()

Supported REST HTTP Methods

GET

Limitations

SOQL Limitations

SOSL Limitations

Fields

Field	Details
BusinessOwnerId	Type reference Properties Filter, Group, Nillable, Sort Description Indicates the person or group associated with this field. The business owner understands the importance of the field’s data to your company and might be responsible for determining the minimum security classification. This field is available in API version 45.0 and later.
BusinessStatus	Type picklist Properties Filter, Group, Nillable, Sort Description Indicates whether the field is in use. Valid values include: `Active` `DeprecateCandidate` `Hidden` This field is available in API version 45.0 and later.
CompactLayoutItems	Type QueryResult Properties Filter, Group, Sort Description The CompactLayoutItemInfo records associated with this field definition. Available in Tooling API starting version 34.0. Because this field represents a relationship, use only in subqueries. Example subquery:
ComplianceGroup	Type multipicklist Properties Filter, Nillable Description The compliance acts, definitions, or regulations related to the field’s data. Valid values include: `CCPA` `COPPA` `GDPR` `HIPAA` `PCI` `PII` This field is available in API version 47.0 and later.
ControlledFields	Type QueryResult Properties Filter, Group, Sort Description The controlled fields in a dependent picklist. Use in subqueries to reduce the number of queries. Available in Tooling API starting version 34.0. Because this field represents a relationship, use only in subqueries.
ControllingFieldDefinition	Type FieldDefinition Properties Filter, Group, Sort Description The field definition of the controlling field if this field is a dependent picklist. A dependent picklist works with a controlling picklist or checkbox to filter the available options. The value chosen in the controlling field affects the values available in the dependent field. This field is available in API version 14.0 and later. Available in Tooling API starting version 34.0.
ControllingFieldDefinitionId	Type string Properties Filter, Group, Sort Description The ID of the ControllingFieldDefinition for this field. Available in Tooling API starting version 34.0.
DataType	Type string Properties Filter, Group, Sort Description Data type of the field, for example `Text(40)` or `Date/Time`. The values are defined as they are in the user interface, not the corresponding API data type names. Available in Tooling API starting version 34.0.
DeveloperName	Type string Properties Filter, Group, Sort Description The unique name of the object in the API. This name can contain only underscores and alphanumeric characters, and must be unique in your org. It must begin with a letter, not include spaces, not end with an underscore, and not contain two consecutive underscores. In managed packages, this field prevents naming conflicts on package installations. With this field, a developer can change the object’s name in a managed package and the changes are reflected in a subscriber’s organization. Label is Record Type Name.
DurableId	Type string Properties Filter, Group, Sort Description Unique identifier for the field. Always retrieve this value before using it, as the value isn’t guaranteed to stay the same from one release to the next. To simplify queries, use this field.
EntityDefinition	Type EntityDefinition Properties Filter, Group, Sort Description A relationship lookup to the object type that contains this field. For example, if the field is defined on an account, the lookup is to `Account`. You can’t interact directly with this field. Instead, use it in queries.
EntityDefinitionId	Type string Properties Filter, Group, Sort Description The durable ID for the object defined in the EntityDefinition field.
ExtraTypeInfo	Type string Properties Filter, Group, Sort Description Represents further definition of a type. Available in Tooling API starting version 34.0. For type textarea: `plaintextarea` `richtextarea` For type URL, `image` For type reference, `externallookup` `indirectlookup` `externallookup` For Account, `switchablepersonname` `personname`
FullName	Type string Properties Create, Group, Nillable Description The full name of the associated metadata object in Metadata API. Query this field only if the query result contains no more than one record. Otherwise, an error is returned. If more than one record exists, use multiple queries to retrieve the records. This limit protects performance.
IsApiFilterable	Type boolean Properties Defaulted on create, Filter, Group, Sort Description If `true`, the field can be specified in the `WHERE` clause of a query string. Available in Tooling API starting version 34.0. You can't sort or filter compound fields. This field’s value is always `false` for compound fields.
IsApiGroupable	Type boolean Properties Defaulted on create, Filter, Group, Sort Description If `true`, the field can be included in the GROUP BY clause of a SOQL query. Available in Tooling API starting version 34.0.
IsApiSortable	Type boolean Properties Defaulted on create, Filter, Group, Sort Description If `true`, a query can sort on this field. Available in Tooling API starting version 34.0. You can't sort or filter compound fields. This field’s value is always `false` for compound fields.
IsCalculated	Type boolean Properties Defaulted on create, Filter, Group, Sort Description If `true`, the field’s value is calculated. Available in Tooling API starting version 34.0.
IsCompactLayoutable	Type boolean Properties Defaulted on create, Filter, Group, Sort Description If `true`, the field can be included in a compact layout. Available in Tooling API starting version 34.0.
IsFieldHistoryTracked	Type boolean Properties Defaulted on create, Filter, Group, Sort Description If `true`, the field’s history can be tracked. Available in Tooling API starting version 34.0.
IsFlsEnabled	Type boolean Properties Defaulted on create, Filter, Group, Sort Description If `true`, you can set field-level security on this field. Available in Tooling API starting version 35.0.
IsHighScaleNumber	Type boolean Properties Defaulted on create, Filter, Group, Sort Description Indicates whether the field stores numbers to 8 decimal places regardless of what’s specified in the field details (`true`) or not (`false`). Used to handle currencies for products that cost fractions of a cent, in large quantities. If high-scale unit pricing isn’t enabled in your organization, this field isn’t returned. Available in Tooling API starting version 34.0.
IsHtmlFormatted	Type boolean Properties Defaulted on create, Filter, Group, Sort Description If `true`, the field contains HTML. Available in Tooling API starting version 34.0.
IsIndexed	Type boolean Properties Defaulted on create, Filter, Group, Sort Description If `true`, the field is indexed in the database. Available in Tooling API version 35.0 and later. Internal (database) indexing is different from indexing for search. We recommend targeting indexed fields for better response times in SOQL queries, reports, and list views.
IsListFilterable	Type boolean Properties Defaulted on create, Filter, Group, Sort Description If `true`, the field can be filtered for a related list. Available in Tooling API starting version 34.0.
IsListSortable	Type boolean Properties Defaulted on create, Filter, Group, Sort Description If `true`, the field can be sorted for a related list. Available in Tooling API starting version 34.0.
IsListVisible	Type boolean Properties Defaulted on create, Filter, Group, Sort Description If `true`, the field can be included in a related list. Available in Tooling API starting version 34.0.
IsNameField	Type boolean Properties Defaulted on create, Filter, Group, Sort Description If `true`, the field is a name field. Available in Tooling API starting version 34.0.
IsNillable	Type boolean Properties Defaulted on create, Filter, Group, Sort Description If `true`, the field can be left out of queries on the object. Available in Tooling API starting version 34.0.
IsPolymorphicForeignKey	Type boolean Properties Defaulted on create, Filter, Group, Sort Description Indicates whether the foreign key includes multiple object types (`true`) or not (`false`). Available in Tooling API version 41.0 and later.
IsSearchPrefilterable	Type boolean Properties Defaulted on create, Filter, Group, Sort Description Indicates whether a foreign key can be included in prefiltering (`true`) or not (`false`) when used in a SOSL WHERE clause. Prefiltering means to filter by a specific field value before executing the full search query. Available in Tooling API version 40.0 and later. Prefiltering is supported only in `WHERE` clauses with the equals (`=`) operator.
IsWorkflowFilterable	Type boolean Properties Defaulted on create, Filter, Group, Sort Description If `true`, the field can be filtered for a workflow. Available in Tooling API starting version 34.0.
Label	Type string Properties Filter, Group, Sort Description The label that corresponds to the field in the user interface. If the label has been translated, the value returned is in the user’s language.
Length	Type int Properties Filter, Group, Sort Description The maximum number of bytes available to store the value in this field. Available in Tooling API starting version 34.0.
LookupFilters	Type QueryResult Properties Filter, Group, Nillable, Sort Description The lookup filters associated with the field. Because this field represents a relationship, use only in subqueries. Example subquery: LookupFilter is not supported on the article type object. Note
MasterLabel	Type string Properties Filter, Group, Sort Description Master label for this object. This display value is the internal label that is not translated. Limit: 40 characters.
Metadata	Type CustomField Properties Create, Nillable, Update Description Compact layout metadata, from the `mns` namespace. Query this field only if the query result contains no more than one record. Otherwise, an error is returned. If more than one record exists, use multiple queries to retrieve the records. This limit protects performance.
NamespacePrefix	Type string Properties Filter, Group, Sort Description The namespace prefix associated with this object. Each Developer Edition organization that creates a managed package has a unique namespace prefix. Limit: 15 characters. You can refer to a component in a managed package by using the `namespacePrefix__componentName` notation. The namespace prefix can have one of the following values: In Developer Edition organizations, the namespace prefix is set to the namespace prefix of the organization for all objects that support it. There is an exception if an object is in an installed managed package. In that case, the object has the namespace prefix of the installed managed package. This field’s value is the namespace prefix of the Developer Edition organization of the package developer. In organizations that are not Developer Edition organizations, NamespacePrefix is only set for objects that are part of an installed managed package. There is no namespace prefix for all other objects.
Particles	Type QueryResult Properties Filter, Group, Sort Description The EntityParticles associated with this field. Available in Tooling API starting version 34.0. Because this field represents a relationship, use only in subqueries.
Precision	Type int Properties Filter, Group, Sort Description The maximum number of digits allowed for this field. Available in Tooling API starting version 34.0.
Publisher	Type Publisher Properties Filter, Group, Sort Description The publisher of this field, for example Salesforce, a user, or a package name. Available in Tooling API starting version 34.0.
PublisherId	Type string Properties Filter, Group, Sort Description ID of the publisher associated with this field. Available in Tooling API starting version 34.0.
QualifiedApiName	Type string Properties Filter, Group, Sort Description A unique external name for the field.
ReferenceTargetField	Type string Properties Filter, Group, Sort Description Available only for indirect lookup relationship fields on external objects. Specifies the field on the parent object to match against this indirect lookup relationship field, whose values come from an external data source. The specified custom field on the parent object must have both `externalId` and `unique` set to `true`.Available in Tooling API starting version 34.0.
ReferenceTo	Type RelationshipReferenceTo Properties Filter, Group, Sort Description The array of values in this field represents the possible object types of the referenced objects. For example, if a FieldDefinition represents a field on Event.WhoId, the values in this field are `Contact`, `Lead`, and custom objects with a relationship to Events. Available in Tooling API starting version 34.0.
RelationshipDomains	Type QueryResult Properties Filter, Group, Sort Description Metadata about the relationships with other objects that this field has. Available in Tooling API starting version 34.0. Because this field represents a relationship, use only in subqueries.
RelationshipName	Type string Properties Filter, Group, Sort Description The value for one-to-many relationships. For example, in the object MyObject with a relationship to YourObject, the relationship name is typically YourObjects. Available in Tooling API starting version 34.0.
RunningUserFieldAccessId	Type string Properties Description Don’t use this field. Available in Tooling API starting version 34.0.
Scale	Type int Properties Filter, Group, Sort Description The number of digits to the right of the decimal in an integer. For example, 3.00 has a scale of 2. Available in Tooling API starting version 34.0.
SecurityClassification	Type picklist Properties Filter, Group, Nillable, Sort Description Indicates the sensitivity of the data contained in this field. Valid values include: `Public` `Internal` `Confidential` `Restricted` `MissionCritical` This field is available in API version 45.0 and later.
ServiceDataType	Type DataType Properties Filter, Group, Sort Description The service datatype for this field. Available in Tooling API starting version 34.0.
ServiceDataTypeId	Type string Properties Filter, Group, Sort Description ID of the ServiceDataType. Available in Tooling API version 34.0. Do not use, provided for backward compatibility only.
ServiceDataTypes	Type QueryResult Properties Filter, Group, Sort Description The ServiceDataTypes associated with this field. Available in Tooling API starting version 34.0. Because this field represents a relationship, use only in subqueries.
ValueType	Type DataType Properties Filter, Group, Sort Description The datatype of the field. Available in Tooling API version 35.0.
ValueTypeId	Type string Properties Filter, Group, Sort Description ID of the ValueType. Available in Tooling API version 35.0.
WorkflowFieldUpdates	Type QueryResult Properties Filter, Group, Sort Description The workflow field updates for this field. Field updates allow you to automatically update a field value to one that you specify when a workflow rule is triggered. Available in Tooling API starting version 34.0. Because this field represents a relationship, use only in subqueries.

FieldDefinition fields are exposed in SOAP API version 45.0 and later. You can use Tooling API to query for FieldDefinition fields in guest user mode in API version 44.0 and earlier. In API version 45.0 and later, use SOAP API to get this data in guest user mode. FieldDefinition is still exposed in Tooling API to User Profiles with the ViewSetup permission.

Note

Example Query: Find Parent Object Types

Some fields can have more than one type of object in a relationship (polymorphic). For example, Task and Event can have relationships with Contact or Lead.

Use this query to retrieve a list of objects that can have a relationship with the FieldDefinition.

Example Query: Find the Datatypes for Account Fields

CustomField Metadata

Field Name	Field Type	Description
caseSensitive	boolean	Indicates whether the field is case sensitive (`true`) or not (`false`). For indirect lookup relationship fields on external objects, this attribute affects how this custom field’s values are matched against the values of referenceTargetField.
defaultValue	string	If specified, represents the default value of the field.
deleteConstraint	DeleteConstraint is an enumeration of strings	Provides deletion options for lookup relationships. Valid values are: `SetNull` Default value. If the lookup record is deleted, the lookup field is cleared. `Restrict` If the record is in a lookup relationship, prevents it from being deleted. `Cascade` Deletes the lookup record and associated lookup fields. For more information on lookup relationships, see “Object Relationships” in the Salesforce Help.
description	string	Description of the field.
displayFormat	string	The display format.
displayLocationInDecimal	boolean	Indicates how the value of a Geolocation custom field appears in the user interface. If `true`, the geolocation appears in decimal notation. If `false`, the geolocation appears as degrees, minutes, and seconds.
externalDeveloperName	string	Available only for external objects. Name of the table column on the external data source that maps to this custom field in Salesforce. Corresponds to External Column Name in the user interface. This field is available in API version 32.0 and later.
externalId	boolean	Indicates whether the field is an external ID field (`true`) or not (`false`).
formula	string	If specified, represents a formula on the field.
formulaTreatBlankAs	TreatBlanksAs	Indicates how to treat blanks in a formula. Valid values are `BlankAsBlank` or `BlankAsZero`.
fullName	string	Required. The internal name of the object. White spaces and special characters are escaped for validity. The name must: Contain characters, letters, or the underscore (_) character Must start with a letter Can’t end with an underscore Can't contain two consecutive underscore characters.
indexed	boolean	Indicates if the field is indexed. If this field is unique or the externalId is set true, the isIndexed value is set to true. This field has been deprecated as of version 14.0 and is only provided for backward compatibility.
inlineHelpText	string	Represents the content of field-level help. For more information, see “Define Field-Level Help” in the Salesforce Help.
isFilteringDisabled	boolean	Available only for external objects. Indicates whether the custom field is available in filters. This field is available in API version 32.0 and later.
isNameField	boolean	Available only for external object fields of type text. For each external object, you can specify one field as the name field. If you set this field's value to `true`, make sure that the external table column identified by externalDeveloperName contains name values. This field is available in API version 32.0 and later.
isSortingDisabled	boolean	Available only for external objects. Indicates whether the custom field is sortable. This field is available in API version 32.0 and later.
reparentableMasterDetail	boolean	Indicates whether the child records in a master-detail relationship on a custom object can be reparented to different parent records. The default value is `false`. This field is available in API version 25.0 and later.
label	string	Label for the field. You cannot update the label for standard picklist fields, such as the Industry field for accounts.
length	int	Length of the field.
lookupFilter	LookupFilter	The Lookup filter definition for the custom field. Available in API version 30.0 and later.
maskChar	EncryptedFieldMaskChar	For encrypted fields, specifies the character to be used as a mask. Valid values are: `asterisk` `X`
maskType	EncryptedFieldMaskType	For encrypted text fields, specifies the format of the masked and unmasked characters in the field. Valid values: `all` All characters in the field are hidden. This option is equivalent to the Mask All Characters. `creditCard` The first 12 characters are hidden, the last four are displayed. This option is equivalent to the Credit Card Number option. `ssn` The first five characters are hidden, the last four are displayed. This option is equivalent to the Social Security Number option. `lastFour` All characters are hidden, except the last four are displayed. This option is equivalent to the Last Four Characters Clear option. `sin` All characters are hidden, except the last four are displayed. This option is equivalent to the Social Insurance Number option. `nino` All characters are hidden. If the field contains nine characters, Salesforce automatically inserts spaces after each pair of characters. This option is equivalent to the National Insurance Number option.
picklist	Picklist	If specified, the field is a picklist, and this field enumerates the picklist values and labels.
populateExistingRows	boolean	Indicates whether existing rows are populated (`true`) or not (`false`).
precision	int	The precision for number values. Precision is the number of digits in a number. For example, the precision value for the number 256.99 is 5.
referenceTargetField	string	Available only for indirect lookup relationship fields on external objects. Specifies the custom field on the parent object to match against this indirect lookup relationship field, whose values come from an external data source. The specified custom field on the parent object must have both externalId and unique set to `true`. This field is available in API version 32.0 and later.
referenceTo	string	If specified, indicates a reference this field has to another object.
relationshipLabel	string	Label for the relationship.
relationshipName	string	If specified, indicates the value for one-to-many relationships. For example, in the object MyObject that had a relationship to YourObject, the relationship name YourObjects makes the relationship type obvious.
relationshipOrder	int	This field is valid for all master-detail relationships, but the value is only non-zero for junction objects. A junction object has two master-detail relationships, and is analogous to an association table in a many-to-many relationship. Junction objects must define one parent object as primary (0), the other as secondary (1). The definition of primary or secondary affects delete behavior and inheritance of look and feel, and record ownership for junction objects. For more information, see the Salesforce Help. 0 or 1 are the only valid values, and 0 is always the value for objects that are not junction objects.
required	boolean	Indicates whether the field requires a value on creation (`true`) or not (`false`).
scale	int	The scale for the field. Scale is the number of digits to the right of the decimal point in a number. For example, the number 256.99 has a scale of 2.
startingNumber	int	If specified, indicates the starting number for the field.
stripMarkup	boolean	Set to `true` to remove markup, or `false` to preserve markup. Used when converting a rich text area to a long text area.
summarizedField	string	Represents the field on the detail row that is being summarized. This field cannot be null unless the value of SummaryOperation is `count`.
summaryForeignKey	string	Represents the master-detail field on the child that defines the relationship between the parent and the child.
summaryOperation	SummaryOperations is an enumeration of strings	Represents the sum operation to be performed. Valid values are: `Count` `Min` `Max` `Sum`
trackFeedHistory	boolean	Indicates whether the field is enabled for feed tracking (`true`) or not (`false`). This field is available in API version 18.0 and later.
trackHistory	boolean	Indicates whether history tracking is enabled for the field (`true`) or not (`false`). Also available for standard object fields (picklist and lookup fields only) in API version 30.0 and later.
trackTrending	boolean	Indicates whether historical trending data is captured for the field (`true`) or not (`false`). If this attribute is `true` for at least one field, the object is enabled for historical trending. Available in API version 29.0 and later.
trueValueIndexed	boolean	This field is only relevant for a checkbox field. If set, true values are built into the index. This field has been deprecated as of API version 14.0 and is only provided for backward compatibility.
type	FieldType is an enumeration of strings	Indicates the field type for the field. Valid values are: `AutoNumber` `Lookup` `MasterDetail` `Checkbox` `Currency` `Date` `DateTime` `Email` `EncryptedText` `Number`¹ `Percent` `Phone` `Picklist` `MultiselectPicklist` `Summary` `Text` `TextArea` `LongTextArea` `Summary` `Url` `Hierarchy` `File` `Html` `Geolocation` For standard fields on standard objects, the type field is optional. This field is included for some standard field types, such as Picklist or Lookup, but not for others. The type field is included for custom fields.
unique	boolean	Indicates whether the field is unique (`true`) or not (`false`).
visibleLines	int	Indicates the number of lines displayed for the field.
writeRequiresMasterRead	boolean	Sets the minimum sharing access level required on the master record to create, edit, or delete child records. This field applies only to master-detail or junction object custom field types. `true`—Allows users with “Read” access to the master record permission to create, edit, or delete child records. This setting makes sharing less restrictive. `false`—Allows users with “Read/Write” access to the master record permission to create, edit, or delete child records. This setting is more restrictive than `true`, and is the default value. For junction objects, the most restrictive access from the two parents is enforced. For example, you set to `true` on both master-detail fields, but users have “Read” access to one master record and “Read/Write” access to the other master record. In this example, users are unable to create, edit, or delete child records.

Picklist Metadata

Field Name	Field Type	Description
controllingField	string	The fullName of the controlling field if this field is a dependent picklist. A dependent picklist works with a controlling picklist or checkbox to filter the available options. The value chosen in the controlling field affects the values available in the dependent field. This field is available in API version 14.0 and later.
picklistValues	PicklistValue[]	Required. Represents a set of values for a picklist.
sorted	boolean	Required. Indicates whether values are sorted (`true`), or not (`false`).

PicklistValue Metadata

This metadata type defines a value in the picklist and specifies whether this value is the default value. This type extends Metadata and inherits its fullName field.

Note the following when working with picklist values:

When you retrieve a standard object, you all picklist values are retrieved, not just the customized picklist values.
When you deploy changes to standard picklist fields, picklist values are added as needed.
You can’t set a picklist value as inactive, but if the picklist value is missing and you invoke an update() call, the missing value becomes inactive.

Field Name	Field Type	Description
allowEmail	boolean	Indicates whether this value lets users email a quote PDF (`true`), or not (`false`). This field is only relevant for the Status field in quotes. This field is available in API version 18.0 and later.
closed	boolean	Indicates whether this value is associated with a closed status (`true`), or not (`false`). This field is only relevant for the standard Status field in cases and tasks. This field is available in API version 16.0 and later.
color	string	Indicates the color assigned to the picklist value when used in charts on reports and dashboards. The color is in hexadecimal format; for example, #FF6600. If a color is not specified, it’s assigned dynamically during chart generation. This field is available in API version 17.0 and later.
controllingFieldValues	string[]	A list of values in the controlling field that are linked to this picklist value. The controlling field can be a checkbox or a picklist. This field is available in API version 14.0 and later. The values in the list depend on the field type: `Checkbox`: `checked` or `unchecked`. `Picklist`: The fullName of the picklist value in the controlling field.
converted	boolean	Indicates whether this value is associated with a converted status (`true`), or not (`false`). This field is relevant for only the standard Lead Status field in leads. Your organization can set its own guidelines for determining when a lead is qualified. The best practice is to convert a lead when it becomes a real opportunity that you want to forecast. For more information, see “Convert Qualified Leads” in the Salesforce online help. This field is available in API version 16.0 and later.
cssExposed	boolean	Indicates whether this value is available in your Self-Service Portal (`true`), or not (`false`). This field is only relevant for the standard Case Reason field in cases. Self-Service provides an online support channel for your customers - allowing them to resolve their inquiries without contacting a customer service representative. For more information about Self-Service, see “Setting Up Your Self-Service Portal” in the Salesforce online help. Starting with Spring ’12, the Self-Service portal isn’t available for new orgs. Existing orgs continue to have access to the Self-Service portal. Note This field is available in API version 16.0 and later.
default	boolean	Required. Indicates whether this value is the default picklist value in the specified picklist (`true`), or not (`false`).
description	string	Description of a custom picklist value. This field is only relevant for the standard Stage field in opportunities. It is useful to include a description for a customized picklist value so that the historical reason for creating it can be tracked. This field is available in API version 16.0 and later.
forecastCategory	ForecastCategories, an enumeration of type string	Indicates whether this value is associated with a forecast category (`true`), or not (`false`). This field is only relevant for the standard Stage field in opportunities. Valid values: `Omitted` `Pipeline` `BestCase` `Forecast` `Closed` This field is available in API version 16.0 and later.
fullName	string	The name used as a unique identifier for API access. The fullName can contain only underscores and alphanumeric characters. It must be unique, begin with a letter, not include spaces, not end with an underscore, and not contain two consecutive underscores. This field is inherited from Metadata.
highPriority	boolean	Indicates whether this value is a high priority item (`true`), or not (`false`). This field is only relevant for the standard Priority field in tasks. For more information about tasks, see “Start Using Tasks” in the Salesforce online help. This field is available in API version 16.0 and later.
probability	int	Indicates whether this value is a probability percentage (`true`), or not (`false`). This field is only relevant for the standard Stage field in opportunities. This field is available in API version 16.0 and later.
reverseRole	string	A picklist value corresponding to a reverse role name for a partner. For example, for the role “subcontractor”, a reverse role is “general contractor”. Assigning a partner role to an account in Salesforce creates a reverse partner relationship so that both accounts list the other as a partner. This field is only relevant for partner roles. For more information, see “Partner Fields” in the Salesforce online help. This field is available in API version 18.0 and later.
reviewed	boolean	Indicates whether this value is associated with a reviewed status (`true`), or not (`false`). This field is only relevant for the standard Status field in solutions. For more information about opportunities, see “Creating Solutions” in the Salesforce online help. This field is available in API version 16.0 and later.
won	boolean	Indicates whether this value is associated with a closed or won status (`true`), or not (`false`). This field is only relevant for the standard Stage field in opportunities. This field is available in API version 16.0 and later.

RelationshipReferenceTo Type

Field	Type	Details
referenceTo	string[]	The objects that can have a relationship to the field represented by this FieldDefinition.

WorkflowFieldUpdate Metadata

For more information about WorkflowFieldUpdate, see the Metadata API Developer's Guide.