InvokeSalesforceRestApiFunction Lambda Function

This Lambda function calls the Salesforce REST API. You can place this Lambda function within a contact flow to create, update, or query Salesforce records.

Configuration: This function is available to Salesforce Voice with Amazon Connect and Salesforce Voice with Partner Telephony from Amazon Connect customers who are using an Amazon Connect instance that’s provided by Salesforce. This function uses OAuth, which requires an external client app or associated connected app in your org. This app is automatically set up for you when you enable Voice.

Starting in the Summer ‘26 release, connected apps can no longer be created. New contact centers use external client apps (ECA) for single sign-on (SSO). Contact centers created before the Summer ‘26 release will continue to use their connected apps for SSO.

Before using this function, you must have OAuth authentication set up. To set up or modify authentication, see Salesforce Voice Authentication When Using InvokeSalesforceRestApiFunction.

Important

This Lambda function uses the environment variable SALESFORCE_REST_API_ENDPOINT_BASE to point to the Salesforce org API endpoint. (For example, https://MY_DOMAIN.my.salesforce.com/services/data/v50.0.) This variable is automatically created when you set up Salesforce Voice. However, if you get a response of { success: false }, verify that this Lambda environment variable is correct.

Sample Contact Flows That Use This Function: Sample_SCV_REST_Check_For_Open_Cases, Sample_SCV_REST_Link_Call_To_Case. To download these flows, visit our Sample Contact Flows folder in GitHub.

Limitations: This Lambda function is subject to Salesforce API request limits and allocations.

Usage: Use this function to create a record, update an existing record, or query for a record. To learn more about programmatically managing Salesforce records, refer to the Object Reference for Salesforce and Lightning Platform and the Salesforce REST API Developer Guide.

This Lambda takes a “methodName” attribute as an argument. This attribute indicates the specific action that the Lambda must perform.

Action	methodName Value	Other Required Attributes
Create a Salesforce record	`createRecord`	`objectApiName` containing the name of the Salesforce object. A list of fields as required to create the record. Each key name is the field name.
Update an existing Salesforce record	`updateRecord`	`objectApiName` containing the name of the Salesforce object. `recordId` containing the ID of the record. The list of fields that you want to update. Each key name is the field name.
Query for a Salesforce record	`queryRecord`	`soql` containing the desired SOQL query. For example, see Query for a Salesforce record. You must store the correct information into a contact attribute first. For details about the $ variable, see the Amazon documentation on contact attributes.

methodName	Output Attribute Name	Description
`createRecord`	`recordId`	ID of the newly created record.
`updateRecord`	None	N/A
`queryRecord`	Names match the names of the fields you queried.	A list of the selected fields. Each attribute contains a different field. Regardless of your query, only the first resulting record is returned.

TIP: To check that the function returned information successfully, add a condition to a Check contact attributes block to check an output attribute based on some detail you expect to see in the result. For instance, let’s say you’re creating a contact record. A contact ID always contains “003” in the ID value, so you can use that information to check the success or failure of the call. The first step is to store the return attribute in a user-defined attribute by using a Set contact attributes block:

Set external attribute

And then you can use a Check contact attributes block to access this user-defined attribute:

Conditions to check

Build your contact flow logic based on this result.

Check contact attributes

Query for a Salesforce record

1SELECT Id FROM Contact 
2WHERE Phone = '$.Attributes.MY_CONTACT_ATTRIBUTE'

See Also

Salesforce Voice Authentication When Using InvokeSalesforceRestApiFunction