Creating Purchase Orders and Closing Sales Orders via Make.com

Does anyone use Make.com with Zoho? I'm trying to achieve two things.

I want to create a purchase order via the API, but it seems that there's no Make.com module for purchase orders. And when I try to use the 'Make an API call' module, I'm being given 401 errors even though I'm using the account owner's authentication.

Furthermore, I'm trying to 'close' sales orders. But in the module for sales orders, I can't seem to change it status to closed in anyway.

Completely new to Zoho, so any guidance would be amazing!

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