wordpress - WHMCS domain transfer external api returns domain not found error always -

I have installed and configured WHMCS in my WordPress site. I want to use a domain as the API functionality "domaintransfer", the action name. But the API response always returns "no domain found" error.

Domain: P>

If you use the API function if the domain is already Is in the database only, but if you are transferring from another company to your domain, then you should use and set the domaintype parameter to transfer.