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How to Update Contact Role to 'Primary Contact' via REST API

Hi All,

Could someone assist me with how to update a contact's role to 'Primary Contact' using the NetSuite REST API?

I have a Customer record with multiple associated Contacts. I need to update one of these contacts to be marked as the Primary Contact programmatically through the API.

In the NetSuite UI, we usually do this by navigating to the Customer → Relationships tab, and using the 'Update Primary' button next to the contact. I'm looking to achieve the same functionality via REST API.

If anyone has done this before or has a sample request, your guidance would be much appreciated.

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