Diagnosis
You wish to process an IDoc for the SD self-billing procedure, howeverit does not have an external transfer number.

System Response
The IDoc is not transferred to the application as long as it does nothave a valid transfer number.

Procedure
In the input parameters for the EDI partner (transaction OVD5), it isspecified that the external transfer number is provided by the partner.The system expects this information in the IDoc in the segment/ fieldE1EDK02/BELNR with the qualifier (QUALF) 074.
Check whether the settings for the EDI partner (OVD5) are correct, thatis whether the external transfer number should really come from thepartner.
If the external transfer number should be explicitly sent by the partner
, there is probably an error in the mapping between your EDI subsystemand the IDoc interface. The above-mentioned segment/field is probablynot filled.