Cisco - NAT Errors - Static entry in use, cannot remove

If you get this error "Static entry in use, cannot remove" when trying to remove a static NAT entry on a Cisco router, you need to clear the translations table first.

You should then be able to remove the static entry, but you will have to do this pretty quickly as any activity on that port (inbound or outbaound) will bring the translation back up.

The easiest way to do this is to cut and then paste the four or so commands in one go:
    clear ip nat translation *
    conf t
        no ip nat inside source static tcp 192.168.1.10 6881 interface Dialer0 6881
        exit

Cisco Docs:
How to Change the Dynamic NAT Configuration  [IP Addressing Services] - Cisco Systems