Diagnosis
You have defined component &V2& as time-independent. You are notpermitted to enter an attendance/absence type for the derivation fortask type &v1& with the time-independent task component &V2& and tasklevel &V3&.

Procedure
Check whether you want component &V2& to be time-independent.
If you do, refresh derivation &v1& &v2& &v3&. The Att./Absence field isthen reset to its initial value.