Material &1 is a procured service; refer to "Services" section

What causes this issue?

You entered a material that is assigned to material type &V2& (&V3&).
This material type indicates that the material is a procured service.
Entries for service procurement are made on a different screen.

System Response

The system accepts the entry. However, the entry may not be visible on
the current screen.

How to fix this error?

Navigate to the <LS>Services</> section of the application to verify
that the service was added correctly.

Procedure for System Administrators

You can customize the <LS>Components</> tab page so that it includes
both material and services.

Error message extract from SAP system. Copyright SAP SE.