JOB_OPEN: Create a Background Processing Job
Use JOB_OPEN to create a background job. The function module returns the unique ID number which, together with the job name, is required for identifying the job.
Once you have "opened" a job, you can add job steps to it with JOB_SUBMIT and submit the job for processing with JOB_CLOSE.
For more information, please see the online documentation in the function module facility (transaction SE37) or
Sample Program: Creating a Job with JOB_OPEN.