User Exit Reference › USREXIT5 User Exit › Return Codes

Return Codes

CA VM:Tape does not check return codes after calling this exit. For consistency, the exit should always zero-out Register 15 (R15) to indicate a return code of zero.

The exit communicates to CA VM:Tape by setting the flag byte passed as follows:

X‘00'

Indicates that CA VM:Tape is not to perform DSE for this mount

X‘80'

Indicates that CA VM:Tape should perform DSE for this mount