X'107C' APPC NEEDED BUT NOT SUPPORTED

Explanation
 The message was determined to be an LU 6.2 APPC
type. However, the APPC message prefix segment was not present or
could not be located.

Programmer response
 Locate the message. The MSGC1APP flag should be set on, indicating the message is an APPC type.
The APPC prefix segment with a segment type (MSGSIID) of X'87' should be present in the message
prefix. This is probably an IMS internal error.