Diagnosis
The predefined condition 'PART_OF' cannot be negated. You have enteredan expression containing the negative form NOT PART_OF or a combinationof expressions that has the same logical meaning.

System Response
The system selects the entire condition. The system does not show theexact point where the NOT PART_OF occurs, because you may have entereda combination of expressions that has the same logical meaning.

Procedure
Check your entry and correct it as appropriate.