Choose interval before & or after &

What causes this issue?

You want to change an interval. When creating an asset, you can only
enter a new time interval.
The new interval must be before &V1& and after &V2&.

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?

You can do one of the following:
Enter a new interval before &V1& or after &V2&.
If you want to make a change within the existing time interval,
you have to do this using the transaction "Change asset."

Error message extract from SAP system. Copyright SAP SE.