To add an item using the Square Connect API, it requires an Item Variation. To create an Item Variation, it requires an Item ID.
How do you get an Item ID without an Item Variation or how do you create an Item Variation without an Item ID?
https://connect.squareup.com/docs/api?path=getting-started#post-items
https://connect.squareup.com/docs/api?path=getting-started#post-variations
I have tried creating an Item with a manually-created Item Variation object, but receive an unprocessable_entity error in return. I have also attempted to create an Item Variation on a previously-created Item (an Item not created with the API), and received a not_found error.