Requesting VSAM RLS Run-Mode

When a program issues a VSAM RLS request (OPEN, CLOSE, or Record Management request), the program must be running in the following run mode, with the listed constraints:

Task mode (not SRB mode)
Address space control=primary
Home address space=primary address space=secondary address space
No functional recovery routine (FRR) can be in effect, but an ESTAE might be.

The VSAM RLS record management request task must be the same task that opened the ACB, or the task that opened the ACB must be in the task hierarchy. That is, the record management task was attached by the task that opened the ACB, or by a task that was attached by the task that opened the ACB.