Last number in number interval assigned (ENTER=Continue)

What causes this issue?

The last asset number in the number range &V1& of number allocation
range &V2& has been allocated.

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?

The asset will be created when you press ENTER.
Contact you Systems Specialist, because all asset classes which use the
number range &V1& in the number allocation range &V2& will need new
number allocation.

Error message extract from SAP system. Copyright SAP SE.