Material & in plant & is not relevant for costing with qty structure

What causes this issue?

You are attempting to cost the material &V1& in plant &V2& using sales
order costing. The settings for this material contradict each other:
The <DS:DE.CK_EKALREL>With quantity structure</> indicator in the
costing view of the material master record is not set.
In the MRP 1 view in the material master record, the MRP group points
to a requirements class that specifies that the material is to be
costed in a <DS:GLOS.cost_estimate_with_quantity_structure>cost
estimate with quantity structure</>.

System Response

The system uses the price in the material's master record.
The planned costs for this material go into the cost estimate as raw
material costs.

How to fix this error?

If you always want to cost this material in a cost estimate with
quantity sturcture, set the <LS>With quantity structure</> indicator in
the material's master record.
<DS:TRAN.MM02>Change material master record</>
If you normally want to cost this material in a unit cost estimate,
change the requirements class. You have two options here:
You can change the MRP group in the MRP 1 view in the material's master
record.
<DS:TRAN.MM02>Change material master record</>
You can change the settings in Customizing for the requirements class
that is entered with the MRP group in the MRP 1 view in the material's
master record.
<DS:TRAN.MM03>Change material master record</>

Error message extract from SAP system. Copyright SAP SE.