X'103C' DEST LNB SID/DEST MSG SID NOMTCH

Explanation
The message is enqueued to an MSC logical link MSNAME, and the destination
SYSID of the message does not match the destination SYSID of the MSNAME.

Programmer response
Locate the MSC destination name in the message (MSGMSONM in the MSC prefix).
It should be an MSC MSNAME. The LNB control block that represents this MSNAME
has a different destination SYSID than the message destination SYSID at MSGMSOID.
The probable cause of the problem is that the MSNAME destination SYSID has
been changed. The LNB control block address is in REG15 in the REG14-12 save
area, and the block is at QTPDST.