How to update bill to customer on an existing sales order using sales order rest API

Summary:

I am using below URL to update the bill to customer on sales order using below rest api but i get always 404 Not Found. When i remove the payload and just pass "comments" : " " we get 200 OK. On the documentation it says below field can be used. Requesting your help and suggestions.

/fscmRestApi/resources/latest/salesOrdersForOrderHub

Order Key: OPS:12345

Method: Patch

Payload:

{

  "SourceTransactionNumber": "Test1",

  "SourceTransactionSystem": "OPS",

  "SourceTransactionId": "Test1",

  "RevisionSourceSystem": "OPS",

  "SourceTransactionRevisionNumber": 1,

  "billToCustomer": [

    {

      "AddressId": 3000007661811,

      "PartyId": 111100681218945,

      "PartyNumber": "122332445",

      "PartyName": "Test Party 1",

      "Address1": "123 address 1",

      "Address2": "1223",

      "Address3": null,

      "Address4": null,

      "City": "London",

      "State": null,

      "PostalCode": "121212",

      "Country": "GB",

      "SourceAddressId": "1"

    }

  ],

  "Comments": ""

}

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