How To Fix UPC_FW091 - Variable &1 cannot be replaced in planning level &2

SAP Error Message - Details

• Message type: E = Error

• Message class: UPC_FW - Messages for Planning Framework, Areas, Levels and Packages

• Message number: 091

• Message text: Variable &1 cannot be replaced in planning level &2

What causes this issue?

No values for replacement can be found for variable &V1&. This problem
can occur in the following situations:
The variable has the replacement type "fixed value", but no values were
defined.
The variable has the replacement type "user-defined values", but no
values were defined for the user, with which you logged onto the
system.
The variable has the replacement type "user exit", but the function
module that you have entered, delivers no values.

How to fix this error?

In the context of the current planning area, change to the maintenance
of variables and check the settings for variable &V1&.

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.