Enter material number

What causes this issue?

The material number is missing. This material type does not allow an
internal material number range.
The material cannot be created since there is no assigned material
number.

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?

Enter a material number.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.