SAP Message AP320 - Texts for characteristic &1 not determined automatically

Diagnosis
The system could not find any method for automatically determiningtexts for characteristic &V1& in the drilldown.

Procedure
If you want text determination for the characteristic in the drilldown,there are three options:
Define the characteristic on a domain with fixed values.
Enter a check table, and a foreign key relationship for the checktable, for the characteristic in the enhancement structure.
You also have to define another table via a foreign key as a text tablefor the check table.
Program the reading of texts for the characteristic values in theappropriate component of the customer enhancement.