Email has Zoho Campaign

Hi,

I have an email address that I would like to invite using Zoho Campaign. The problem is when I send an invite to this particular email address, it says " This email address has been already used in some other organization. So you cannot add/invite this user."

How can I remove this from the other organization / it's the same organization? Please help as I want this to be invited to the Original Zoho Campaign of our Organization.

Thanks.

Hernan