SAP Message AO237 - Deleting app.request &4 not allowed - it is assigned to inv.prog. &1/&2

Diagnosis
You want to delete appropriation request &V4&.
However, the appropriation request is assigned to program position &V1&of investment program &V3& in approval year &V2&.

System Response
Deleting the appropriation request is not allowed.

Procedure
If you want to delete appropriation request &V4&, check if you candelete the assignment to investment program position &V1&.