Update an Account, Create a Contact, and Link Them with a Junction Object

The following example uses the Composite resource to update some fields on an account, create a contact, and link the two records with a junction object called AccountContactJunction. All these requests are executed in a single call. The composite.json file contains the composite request and subrequest data.

Update an account, create a contact, and link them with a junction object

1curl https://MyDomainName.my.salesforce.com/services/data/v65.0/composite/ -H "Authorization: Bearer token -H "Content-Type: application/json" -d "@composite.json"

Request body composite.json file

1{
2    "allOrNone" : true,
3    "compositeRequest" : [{
4        "method" : "PATCH",
5        "url" : "/services/data/v65.0/sobjects/Account/001xx000003DIpcAAG",
6        "referenceId" : "UpdatedAccount",
7        "body" : {  
8            "Name" : "Salesforce",
9            "BillingStreet" : "Landmark @ 1 Market Street",
10            "BillingCity" : "San Francisco",
11            "BillingState" : "California",
12            "Industry" : "Technology"
13        }
14    },{
15        "method" : "POST",
16        "referenceId" : "NewContact",
17        "url" : "/services/data/v65.0/sobjects/Contact/",
18        "body" : {  
19            "lastname" : "John Doe",
20            "Phone" : "1234567890"
21        }
22    },{
23        "method" : "POST",
24        "referenceId" : "JunctionRecord",
25        "url" : "/services/data/v65.0/sobjects/AccountContactJunction__c",
26        "body" : {  
27            "accountId__c" : "001xx000003DIpcAAG",
28            "contactId__c" : "@{NewContact.id}"
29        }
30    }]
31}

Response body after successfully executing the composite request

1{
2  "compositeResponse" : [{
3    "body" : null,
4    "httpHeaders" : { },
5    "httpStatusCode" : 204,
6    "referenceId" : "UpdatedAccount"
7  }, {
8    "body" : {
9      "id" : "003R00000025R22IAE",
10      "success" : true,
11      "errors" : [ ]
12    },
13    "httpHeaders" : {
14      "Location" : "/services/data/v65.0/sobjects/Contact/003R00000025R22IAE"
15    },
16    "httpStatusCode" : 201,
17    "referenceId" : "NewContact"
18  }, {
19    "body" : {
20      "id" : "a00R0000000iN4gIAE",
21      "success" : true,
22      "errors" : [ ]
23    },
24    "httpHeaders" : {
25      "Location" : "/services/data/v65.0/sobjects/AccountContactJunction__c/a00R0000000iN4gIAE"
26    },
27    "httpStatusCode" : 201,
28    "referenceId" : "JunctionRecord"
29  }]
30}

REST API Developer Guide

Update an Account, Create a Contact, and Link Them with a Junction Object