Calculation rule value is not allowed

What causes this issue?

An assignment of calculation type as <PF><LS>Value</></> to an Addition
and Deduction procedure is incorrect.

System Response

You cannot attach calculation type as <LS>Value</> for calculation
value #Base Quantity -> Basic Quantity# and #Basic Quantity -> Target
Quantity#

How to fix this error?

Do not attach calculation type as <LS>Value</> for calculation value
#Base Quantity -> Basic Quantity# and #Basic Quantity -> Target
Quantity#

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.