SAP Message RSZA012 - Cannot edit query for the following reasons:

Diagnosis The query is too complex to be edited with the Ad-hoc QueryDesigner Web item. The reasons for the high complexity of the queryare given in the messages that follow. System Response The query is loaded but you cannot change it using the Ad-hoc QueryDesigner Web item. Procedure If you want to make changes to the query definition, you can do this inthe BEx Query Designer.