Diagnosis
There is an active version of data model &V1&. This means that the datamodel has already been activated, and database tables have beengenerated for storing the master data. You can therefore only makelimited changed to the data model.
In the definition of data model &V1&, changes have been made (ascompared to the active version) that could lead to loss of data in thegenerated database tables. The changes are described in detail in the f
ollowing system messages.

System Response
If there are error messages, the changes to the data model cannot besaved for security reasons. If there are only warnings, the changes canbe saved.

Procedure
Check if the changes to the data model can be made without loss of data.