SAP Message 1W207 - You can only modify the default version

Diagnosis
There are different versions of the Drag&Relate data (delivery version,(customer version, active version and possibly inactive version).Depending on the system settings and existing versions, exactly oneversion can always be edited to ensure data consistency. This editableversion is also called the "default version".

System Response
The object is not always available for editing in this version.

Procedure
If you want to change the object, select the editable version.