SAP Message WS169 - Internal error compiling communication structure for item &1 of doc. &2

Diagnosis
bis auf ersten Satz identisch mit WS 168, WS 170
Communication structure MCWBRP for item &V1& of document &V2& could notbe compiled.
Without the communication structure, it is not possible to update datain the Logistics Information System.

System Response
No update is carried out for any of the documents currently beingprocessed. Data is not updated in the Logistics Information System foreither agency business itself or subsequent settlement (business volumedata or income (in the case of a settlement document)).

Procedure
Contact your R/3 system administrator, as this situation should notoccur. It is probably due to a program error.