The IMS ECCR attempted to issue a message, but the message formatter was busy. In an IMS ECCR environment, messages must be issued one at a time.
Processing continues. A message from the IMS ECCR is lost. The error might have occurred in an IMS BMP or MPP region.
Check IMS BMP and MPP regions for messages that might require a response. For information on IMS messages, see the appropriate MVS publication for a description of the IMS messages codes.