SAP Message W0058 - Material already created with industry &, industry cannot be changed

Diagnosis
Materials have already been created for Retail with the existingindustry. You want to change the industry. This is not possible.

System Response
The system only allows the industry in table TWPA to be used forRetail.

Procedure
Use the industry in table TWPA or delete all materials with theprevioulsy used industry. Then change the industry.