SAP Message WTADDI442 - No additional is assigned to external additional &1

Cause
You have entered an external description for anadditional that cannot beconverted into an internal material number.

System Response
The system cannot accept internal description &V1& that you entered.

Procedure
Check your entries.
If you want to assign a material number, you can do thishere. (Afterwards, you must call sales ordermaintenance once again!)