X'1050' DEST CONV BUT NO SPA SEG IN MSG

Explanation
 The message destination is an IMS conversational transaction code, but the
message does not contain a scratch pad (SPA) segment.

Programmer response
 Locate the message destination name
in the MSC prefix at MSGMSONM. This name is a conversational transaction
code. The SMB address for the transaction code is in REG1 in the REG14-12
save area, and the SMB block is at QTPDST. The MSG2SPA flag in the
MSC prefix should be set on to indicate the message contains a scratch
pad (SPA). However, the flag is not set. The probable cause of the
problem is that the transaction code was changed from non-conversational
to conversational.