Diagnosis
You entered (externally assigned) a delivery number.
Delivery type &V1& only permits internal number assignment. When yousave the delivery, the next available number in the designated numberrange will automatically be assigned.

Procedure
Delete the document number.
If you require external number assignment for this delivery type, youmust assign an external number range in Customizing.
Make the necessary settings in Customizing if you have theauthorization to do so.
Inform your system administrator if you cannot make the settingsyourself.