Batch Request allows us to make multiple API calls within a single API call.  We’re limited to 1000 API calls in a single batch request. The HTTP method only supports POST, PATCH & DELETE in Batch Request.

In this Blog, We’re calling 3 API calls in a single Batch Request.

• POST – Create a new Account Record
• PATCH – Update a Contact Record
• DELETE – Delete a Contact Record

Request Body Data:

--batch_CR
Content-Type: multipart/mixed;boundary=changeset_EHEE

--changeset_EHEE
Content-Type: application/http
Content-Transfer-Encoding:binary
Content-ID: 1

POST https://dynamicstrial.api.crm.dynamics.com/api/data/v9.1/accounts HTTP/1.1
Content-Type: application/json;type=entry

{
    "name":"ABC Company",
    "accountnumber":"ABC001",    
}

--changeset_EHEE
Content-Type: application/http
Content-Transfer-Encoding:binary
Content-ID: 2

PATCH https://dynamicstrial.api.crm.dynamics.com/api/data/v9.1/contacts(d5638eb7-6e87-ed11-81ac-6045bd0061f1) HTTP/1.1
Content-Type: application/json;type=entry

{
    "firstname":"Young",
    "lastname":"God",
    "emailaddress1":younggod@hotmail.com
}

--changeset_EHEE
Content-Type: application/http
Content-Transfer-Encoding:binary
Content-ID: 3

DELETE https://dynamicstrial.api.crm.dynamics.com/api/data/v9.1/contacts(a5638eb7-6e87-ed11-81ac-6045bd0061f1) HTTP/1.1
Content-Type: application/json;type=entry

--changeset_EHEE--

--batch_CR--

Here are few key things to know :

• Changeset is a transactional operation which means if any operations fail then all completed operations will be rolled back.
• Each individual request in the batch request body must start with –batch_<unique identifier>
• Each individual changeset request operation must start with –changeset_<unique identifier>
• End of the changeset is set with –changeset_<unique identifier>–
• End of the batch is set with –batch_<unique identifier>–

Header:

OData-MaxVersion:4.0
OData-Version:4.0
Accept:application/json
Content-Type:multipart/mixed;boundary=batch_CR
Prefer:odata.include-annotations=”*”,return=representation

NOTE: You must include ” boundary= batch_<unique identifier>” in Content-Type of your header.

Now click on Send Request.

This Batch request will Create, Update and Delete record in desired Entity with status “200 OK” in the response body.

Happy D365ing.

Reference Links: 

Execute Batch Operation using Web API

Compose HTTP requests and handle errors (Microsoft Dataverse for Apps) – Power Apps

Create Application User In Dynamics CRM