z/OS TSO/E Customization
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Restrictions and limitations

z/OS TSO/E Customization
SA32-0976-00

The following exits are invoked asynchronously in the TSO/E address space and should not use any TSO/E I/O service routines.
  • 80% message capacity
  • 100% message capacity
  • Deactivation (when the X'80000000' bit of the flags field is on)

If these exits need to issue a message to the user, they should use the TPUT service.

Parent topic: Programming considerations

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