SAP Message R7547 - InfoO. &1 is used in compounding of &2: Data type cannot be changed

Diagnosis
The data type of InfoObject &V1& was either changed to 'CHAR' or from'CHAR' to another data type. This is not allowed if InfoObject &V1&still appears in compounding (as with InfoObject &V2&).

System Response
InfoObject &V1& cannot be activated.

Procedure
First remove InfoObject &V1& from the compounding with InfoObject &V2&,before you activate it.