The item cannot be added to this block
Message type: E = Error
Message class: V1 - Verkaufsbelegbearbeitung
Message number: 639
Message text: The item cannot be added to this block
What causes this issue?
No more sub-items can be added to this main item.
System Response
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
How to fix this error?
In Customizing for sales document types, you can define different
increments for the numbering of main and sub-items. Check these
settings.
Error message extract from SAP system. Copyright SAP SE.