API Error: “The remote server returned an error (400) Bad Request”

Problem

You get the following error while attempting to use the API to import a custom field to an issue:

The remote server returned an error: (400) Bad Request

Cause

This error occurs when you try to import, via the API, a custom field from a project that does not have a custom form associated with a Queue Topic.

Solution

Add the correct custom form to the Queue Topic.

To learn more about Queue Topics, see Create Queue Topics.