Max.prod.length and the fixed scrap first and last lengths contain values

<LS>&CAUSE&</>
You tried to create or change a bill of material (BOM) or a routing.
This is not possible because at least one of the fields <LS>Max.
Production Length</>, <LS>Fixed Scrap First Length </>or <LS>Fixed
Scrap Last Length </>contains a value. These fields must be blank for
the length calculation method that you selected.

System Response

The system terminates the backup operation.

How to fix this error?

Delete the values from the above fields.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.