How can I add new transcation to Order or update existing one by using API from C#? by Erinc Erol

Hi,

So, I'm creating an order using shopify API from C# with one transaction. After that, I want to add new transaction or update the existing one. I guess updating is not an option but adding new one is also solves my problems. But while I'm trying to add new one to order I get 422 Unprocessible error.

What I do is, I get the order id, create new transaction json, "{\"transaction\":{\"kind\":\"capture\"}}" like this and try to post it to the shopUrl/admin/orders/#{id}/transactions.json.

I'm creating json data same as in the documentations, using application/json header and everything and been stuck at this problem almost 3 days now. I really can use some help.

Thanks.