I am developing the post api call of /order/cart/{cartId}/item/{itemId}/configuration for purchasing domains.
What value should be entered on OWNER_CONTACT /me/contact/xxxx?
Anubhav,
OWNER_CONTACT configuration should have a value like « /me/contact/xxxx », where xxxx is the contact id of the Registrant of the domain.
When you create your contact (Registrant) via « post /me/contact » you will find it in the response returned.
If you still face some issues we'll be happy to fix
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Whmcs Global Services