Syntax for REST API to have bold formatted and multiple lines in product description [closed]
Through more experimentation, I found the culprit- This does not work: curl_setopt($ch, CURLOPT_POSTFIELDS, $jsonDataEncoded); This does work: curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data)); So it was the processing of the data in $data through curl which was causing the permission problem.