Diagnosis
You want to use info cube &V2& for reading actual data. Info cube &V2&does not, however, contain version field &V1&.
This version field is required for separating actual data and differentplan versions when using plan/actual reporting in SAP BW. The actualdata must be plan version 0 data.

Procedure
Include version field &V2& in info cube &V1& or select an info cubethat contains the version field. Then run the function once again.