When PGMA calls PGMB for the first time PGMB executes the
*INZSR. PGMB uses the RETRN operation to return to PGMA.
When PGMA call PGMB the second time is the *INZSR executed?
Answer
No, on second call *INZSR will not be executed. If PGMB use
INLR to go back to PGMA then only *INZSR will be get
executed in second call.