SAP Message WM152 - Enter either material group or material

Diagnosis
Your current selection is likely to produce such a large work list thatperformance problems are to be expected.

Procedure
Specify at least one of the parameters requested. If you do notknow of any, you can also enter '*' - however, if you do this, you areonce again choosing a complete scan for this parameter, and you couldencounter performance problems.