Can a message be issued to the TPX log from TPXUSNSF?

Document ID : KB000122438
Last Modified Date : 17/12/2018
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Question:

To speed up problem identification/resolution in a live environment is there a supported method that would allow a site to build one or more messages that would appear in the TPX log? 

This would allow the messages in the TPX log to contain as much detail as possible.

Answer:
The LOGMSG macro in the ... CB0VMAC library can be used in TPXUSNSF exit to generate messages.