ePhone slot is already registered with 00f0.0000.0000

When trying to remove a phone from Communication Manager Express (CME) to receive the following error: ePhone slot is already registered with 00f0.0000.0000

Steps to resolve and remove the phone:
1. Unplug the phone
2. Remove the ephone 1
3. Type, clear ip dhcp bindings
4. Re-create the ephone 1
5. Define the mac-address of the phone
6. Now plug back in the phone.