Entry of &1 is only allowed with &2 entry

What causes this issue?

You have defined a &v1& without a &v2& entry.

System Response

The system does not allow you to enter a &v1& without a &v2&.

How to fix this error?

Delete the attribute entry for &v1& or specify a &v2&.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.