Data contains invalid characteristic values for attribute &1 (&2)

MESS SHORT TEXT: Data contains invalid characteristic values for
attribute &1 (&2)

What causes this issue?

Before writing the attribute values, the system checks the integrity of
the references contained in the data. In the case of attributes that
reference a master data table, the system checks for all such
attributes whether the attribute values exist in the respective master
data table for the attribute.
When attribute &V1& (&V2&) was checked, no appropriate entry was found
in the master data table.

System Response

The analysis process terminates.

How to fix this error?

For more information on the affected characteristic values, refer to
the previous messages in this log. Check the attribute values that
contain errors and change the analysis process.

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.