SAP Message C2305 - Order &1 is assigned to account of order &2

Diagnosis
Order &1 is assigned to account of &2.

Procedure
To set the deletion flag for order &2, you must change the settlementrule of order &1 or set the deletion flag for order &1.

402594COHV: C2305 when closing production order
396673C2305 when closing or setting deletion flag
393339C2305 upon closing or setting deletion flag
1547840Error C2 305 with settlement to another order
983490Error C2 305 with settlement to another order