CASMQ1006E Unexpected message format (msg-format) on MQGET in CKTI

The WebSphere MQ trigger monitor program (CKTI) was expecting a trigger message (MQFMT-TRIGGER) but received an unexpected format.
System Action:
Trigger transaction will not be started.
Resolution:
Check the WebSphere MQ Process definition.
Module:
dfhtmqgw
Destination:
Console