DHCP Failover

I am attempting to configure a DHCP failover using server 2012. I am receiving an error that reads

"The specified DHCP client is not a reserved client. Configure failover failed. Error 20018. The specified DHCP client is not a reserved client."

Any ideas why I am receiving this?
Mehdi MomeniAsked:
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MaheshConnect With a Mentor ArchitectCommented:
if you have any "Bad address" seen in scope as leased out, delete that once and then try to build cluster again
What exactly are you attempting to do when you receive this error? From what I've found, the most common cause of this error is attempting to create a reservation for an address that's outside of the DHCP address range. For example, if your scope's address range is - and you try to create a reservation for, you'll receive that error.
Mehdi MomeniAuthor Commented:
I had an error in the DHCP reservation that was resolved by fixing it. Thanks for your help.
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