Diagnosis
The IDoc passed to the ALE layer could not be processed. The settingsin the control record were not correct.
The logical message type (field MESTYP) was not passed.
The attempt to copy the value of the EDI message type (STDMES field)also failed, because this field was also empty.

Procedure
The fields mentioned above did not contain the values which they shouldhave done in the calling program.
Make a note of the transaction in which the error occurred and informyour ALE administrator.