I have a callout that is having an issue with it's POST. I have seen a couple of work arounds for this issue but none of them seem to work with my integration.



adding "?_HttpMethod=PATCH" to the end of the endpoint

I continue to get the error:

{"Message":"The requested resource does not support http method 'POST'."}

Before I move toward Heroku or MuleSoft, is there any other work arounds that I might not have stumbled across yet?

    HttpRequest request = new HttpRequest();
    //request.setHeader('X-HTTP-Method-Override', 'PATCH');
    request.setHeader('Content-Type', 'application/json');
    request.setHeader('AuthToken', authToken);
    //request.setEndpoint(UPDATE_LEAD_ENDPOINT + '?_HttpMethod=PATCH');
    String requestBody = JSON.serialize(updatedLeadData);

    Http http = new Http();
    HttpResponse response = http.send(request);
    String responseBody = response.getBody();
    return '';
  • the endpoint you are referencing doesnt support the POST method, its not really an issue, its just not supported, did you check the api's documentation for supported methods?
    – glls
    Commented Apr 16, 2019 at 18:18
  • Are you trying to use standard REST API endpoints to update a Lead?
    – Jayant Das
    Commented Apr 16, 2019 at 18:26
  • yea the documentation states it can take a POST but it clearly isn't accepting it.
    – Olivia
    Commented Apr 16, 2019 at 18:28
  • @JayantDas yes, I just put them in named credentials but they are standard URL endpoints
    – Olivia
    Commented Apr 16, 2019 at 18:28
  • @Olivia POST is only for creating records, you will need to use PATCH here. I have added references from the docs in my answer.
    – Jayant Das
    Commented Apr 16, 2019 at 18:31

2 Answers 2


Aside from other alternatives, a composite request would suffice. This method accepts a POST, and you can specify individual methods (like PATCH) for each of up to 25 requests. You'll just need to adjust the JSON to have this extra metadata.


It seems you are trying to utilize the standard REST API endpoint to update a Lead record. If that's the case, then you will need to utilize a PATCH request here. POST is not supported request type for any update requests, it is utilized only for creating records.

This is from Update a Record documentation:

Provide the updated record information in your request data and use the PATCH method of the resource with a specific record ID to update that record.

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