Retail materials cannot be maintained in the industry system

What causes this issue?

Your system is not defined as an SAP Retail System. For this reason,
you can use only industry functions for maintaining material master
records, and not retail-specific maintenance functions.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Contact your system administrator.

Error message extract from SAP system. Copyright SAP SE.