Diagnosis
The field "material type" (MARA-MTART) for this material and sales unitrefers to an entry in the material type table which does not exist.

System Response
This record cannot be prepared for POS outbound.

Procedure
The material type must be maintained or avalid material type must be entered in material maintenance. In thelatter case the material must be created for the relevantmaterial type.
If the error occurred during initialization, you mustre-start the POS outbound.
If the error occurred for changes, you do not have to do anything. Thedata will be retransmitted next time.