Views:
Applies to Product - Dynamics 365 Business Central

What’s happening?
The due date field on the service invoice header is not populated automatically when the customer number is entered first.
 
Reason:
This occurs when the customer number is entered before any other fields, which prevents the due date from being filled in automatically.
 
Resolution:
To resolve this, enable the manual number's field on the number series field. This adjustment allows the due date to be populated correctly when the customer number is entered first.