How to associate a Contact with Sales Order (API)

How to associate a Contact with Sales Order (API)

Hi Guys,

just wondering how to associate a CONTACT entity with SALES ORDER when creating a new sales order via the API. Is there a specific field which I need to fill in in order to achieve the link?

My sales orders are currently linked to ACCOUNT and that account entity is linked to CONTACT. If I view the account entity in ZOHO CRM I can see the associated sales order. Viewing the Contact entity does not have the order listed.

Thank you. Martin.