On exit, the value in register 15 determines what processing should take place, and R1 supplies input to that process. The following lists the result for each possible value of register 15:
Continue processing; data is sent to current session.
Switch to new session; data is sent to new session. R1 points to the new session entry in the session list.
Discard input and issue message to caller. The message should be moved to the supplied area. Message TPX1054 containing the two messages will be displayed. The send exit can alter the displayed text.
Switch to the new session, but discard the data. R1 points to the new session entry in the session list.
Pass the data to the new session, but do not switch into the session. R1 points to the new session entry in the session list.
Important! Data streams cannot be altered by this exit and should be used only for route selection.
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