Internal shared-cost allocation
Use agreed allocation evidence and preserve the original cost total.
Allocate a common cost using its confirmed internal driver
Reconcile proposed department amounts to one original cost.
Remove an already direct-assigned cost before allocating a pool
Avoid allocating the same direct cost a second time.
Hold a common-cost allocation with an unknown driver value
Keep an unallocated pool distinct from a zero-share department.
Revise an internal allocation without changing the original cost
Use a linked zero-sum reclassification from the approved new basis.