EXIT(ON)

Document ID : KB000107792
Last Modified Date : 30/07/2018
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Introduction:
TSSINSTX exit
Question:
If we don't need to customize TSSINSTX, is it recommended to set EXIT(ON) or EXIT(OFF) ? What are the calls made in TSSINSTX ? We have all lpars with EXIT(ON). 
Environment:
z/os
Answer:
There is no specific recommendation on having EXIT(ON) or EXIT(OFF) set. If you are sure you are not making use of any of the exit points in TSSINSTX then I would suggest having EXIT(OFF) set. It stops any confusion to others on if TSSINSTX is in use.