CPHRA0409E No job prefix was specified in the CICS DA server properties file or in the API request.
Explanation
To perform the operation, the CICS DA server requires a job prefix to submit batch JCL.
System action
The API request fails with HTTP status code 400.
Response
Specify a job prefix in the CICS DA server properties file or in the API request and retry the request. The CICS DA server must be restarted to use a new "com.ibm.cph.server.prefix" value in the server properties file. If the job prefix is not specified in the server properties file, add a "prefix" parameter to the API request.