z/OS MVS Programming: JES Common Coupling Services
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Programming Considerations

z/OS MVS Programming: JES Common Coupling Services
SA23-1387-00

  • Avoid using services that can cause an MVS wait.
  • If you add an extent to the message packet or alter the length of the message update, use XIT01_MAX_ADD in IXZ$XPL to reflect the message size change. XIT01_MAX_ADD contains the maximum number of bytes that can still be added to a message packet. Be certain to decrease its size as the message packet grows.

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