While Updating same contact in ZOHO books, it shows email id already exist.

While Updating same contact in ZOHO books, it shows email id already exist.

Hi Team,

I'm Using ZOHO books,
While Updating same contact using this api: https://www.zoho.com/books/api/v3/#Contacts_Update_a_Contact.

it shows:
{
    "code"102027,
    "message""The email address you're about to add/update already exists within the contact (Contact or associated contact persons). Make sure that the email address you provide is unique."
}