The documentation portal is undergoing maintenance. During this period, you can't create any new user credentials. If you do, you'll need to recreate the user credential after the maintenance period ends.
The REST API sends a response header and response body in JSON format with information about the success or failure of the REST API call.
The response header can contain the following information:
server
content-type
content-language
content-length
date
connection
transfer-encoding
severity
errorCode
description
logFile
The response body can contain information about the output and additional output ports. If the output type was file, the response body contains a path to the output. If the output type was buffer, the response body contains the buffer contents. The response body can also contain a success or failure code and message.