SAP Message 88757 - Error in billing item &1/&2: customer number is initial

Diagnosis
No material number could be determined for the recycling declarationfrom billing item &V2& for document &V1&.

System Response
The system can not carry out calculation of the splitting factor forregional processing for this billing item. The item was neverlessvaluated with a proportion of 100%.

Procedure
Please check the billing item &V1& / &V2& and, if relevant, the settingin general REA Customizing for "Customer number table and field" in thesection "Control of Declaration/Origin Movement Data".