Not sure what you’re asking but try DSPPGMREF.
The Display Program References (DSPPGMREF) command provides a list
of the system objects referred to by the specified programs.
But I think I’ve got your question.
The *LDA is associated with a job, any programs called in that job will be able to use that data area.
Each job has a data area, *LDA
It’s unique to the job, is created when the job starts and deleted when the job ends.
Some programs use this data area to pass data to other programs in the same job.
The *LDA from one job cannot be seen by other jobs