SAP Message AP2002 - 'Role in hierarchy' field: Entry &1 not possible, see long text

Diagnosis
You tried to enter the value '&V1&', but the parent position has thevalue '&V2&'.

System Response
The entry is rejected.

Procedure
Only the following combinations are allowed:
Parent position has value '2' (totals position) - Position can have thevalue '2' (totals position) or '1' (strategic program position) orremain blank.
Parent position has value '1' (strategic program position) - Positioncan have value '1' (strategic program position) or remain blank.
The values of parent position and position remain blank.
(Refer also to the F1 help for the field!)