ATB80123I System cannot process a call. The conversation is in backout required state.

Detecting Module:

Explanation
 A TP called an APPC/MVS TP conversation service
for a syncpt conversation.  The system could not process the request
because a "backout required" condition exists for the unit of
recovery that the syncpt conversation belongs to.

System action
 The system returns a program_state_check (decimal
25) return code to the caller of the conversation service.

Programmer response
 When a unit of recovery that includes an
application programs syncpoint conversation is in backout required
state the application program should issue a Backout call to backout
local resource associated with the current unit of recovery.

Source
 APPC/MVS

Detecting Module:

ATBVSRB