How to create a supplier against an existing party in Oracle using REST API

Summary:

We have a requirement to check if there is a party record exist for a new supplier in Oracle based on supplier name and TIN number. If Yes, we would need to create the supplier record against that party. Is there a way to achieve this using REST API? While trying to set the RegistryID (which is the party number) in the POST request payload, we get the below error:

Attribute RegistryId in view object SupplierVO cannot be set.

REST URL used: https://servername/fscmRestApi/resources/11.13.18.05/suppliers

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