What is the upper limit for a payload to pass in the POST method?

appends data to the service URL. But, its size shouldn’t exceed the maximum URL length. However, doesn’t have any such limit.

So, theoretically, a user can pass unlimited data as the payload to POST method. But, if we consider a real use case, then sending POST with large payload will consume more bandwidth. It’ll take more time and present performance challenges to your server. Hence, a user should take action accordingly.