Check the multiplier for the reference material for consumption

What causes this issue?

You have specified a reference material for consumption, but no
multiplier.

System Response

In this case, the system proposes multiplier <LB>1</>. This means that
the consumption data of the reference material is copied 1:1 and the
forecast taken as a basis.

How to fix this error?

Check the multiplier, altering it if necessary.

Error message extract from SAP system. Copyright SAP SE.