Do you still offer support for the Zohobooks API? Or is it now an old un-supported software?

Just asking, because there seems to be some conflicts in your API docs.

According to https://www.zoho.com/books/api/v3/contacts/#list-contacts you should be able to find a contact via the email address (e.g. using the query parameter &email=xxx@xxx.com).

According to https://www.zoho.com/books/api/v3/contacts/#create-a-contact when creating a new contact there is no email field. I can only see the latter field in the contact_persons (see API https://www.zoho.com/books/api/v3/contact-persons/#create-a-contact-person).

Please clarify: How exactly can we find a contact via the customer's email? Is there a workaround for this bug?