Hello guys, I'm trying to create a call in development environment or visual studio to post a sales invoice of a specific item, the closest I get was creating a customer from a youtube guide I saw.
I want to create a call that posts always the same item and the same quantity when I run but I don't seem to find a way to do it.

What kind of object should I create code unit?
I intend to post the web service to integrate it on talend.

Best regards, Carlos Fernandes