BOM already exploded for costing run & &

What causes this issue?

You are trying to determine the quantity structure for a quantity
structure of costing run &V1& &V2& that has already been exploded.

System Response

This could cause data inconsistencies in the costing run.

How to fix this error?

To prevent data inconsistencies, first carry out the selection of
materials again.

Error message extract from SAP system. Copyright SAP SE.