40030: Invalid publish request

A publish request was rejected because it was invalid.

What you should do

Correct the malformed publish request and resend. The accompanying message names the specific problem, so start there.

Why it happens

The publish request was rejected because something in it was invalid: a field, a value, or the structure of the request itself.

What you'll see

The error is reported with code 40030 and HTTP status 400. The message varies with the cause; the generic wording is Invalid publish request (unspecified).