Pool & & not suitable for index LIFO

What causes this issue?

For pool &V1& &V2& a unit of measure was determined via valuation
customizing. The pool must be valuated on a quantity basis. A value
based only pool formation, such as index LIFO valuation is not possible.

How to fix this error?

Check whether this pool should be valuated according to the index LIFO
procedure; if so, in valuation customizing you must delete the unit of
measure for pool &V1& &V2& via "LIFO --> Pools", before you can form a
base layer.

Error message extract from SAP system. Copyright SAP SE.