I am aware of the integrations available between Zoho CRM and Zoho Books, and our company is leveraging them. However, syncing needs to happen on-demand for one of our workflows, which requires producing entries for custom product in CRM and syncing them to Books straight away. I've constructed a little Deluge script to run every time a product is edited or created in CRM which pushes that product to Books as an item. It works, but for the life of me I can't figure out how to link the two. I've tried including "zcrm_product_id": product.get("id") in my key/value map, but it doesn't seem to do anything. Does anyone know how to manually link a product in CRM with its counterpart in Books?