Reason &1 is not supported in this context

What causes this issue?

The current context requires a reason for movement from reason group
&V2&. The entered reason for movement &V1& does not belong to the reason
group &V2&. So the entered reason is not valid in this context.

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?

Choose a reason for movement which is valid in this context. If you
think that the reason &V1& should be used, you should add it to the
reason group &V2& in the Customizing activity
<DS:SIMG./SCWM/VTIMREAGRP>Manage Reasons for Goods Movement</>.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.