SAP Message R7467 - &1 &2 contains data: Characteristic &3 cannot be activated

Diagnosis
The &V1& &V2& must be converted incompatibly with an activation ofcharacteristic &V3& (changes to the key in the table). Table &V2&contains data. Parts of this data were lost in the conversion.

System Response
Characteristic &V3& cannot be activated.

Procedure
Undo the changes that led to the incompatible conversion (the changesin the key) or delete all data from table &V2&.