Error when trying to update stocks from store

[Buildcode1]

Good afternoon,

I´m developing an API to update the stocks of my store using an ERP, when i try to use the POST or PUT request it returns an 406 error or a 401 error.

I´m using c# and i use XML to update. I've also tried to use JSON but the error persisted. Found online something about Inventory-levels and tried to use, without success.

Can someone help me ? Already spoken with shopify support but they don't have developers.

Thanks for your atention.

Hope someone save me 🙂 .