For the create atomic order endpoint, I get the error
Referenced order type does not exist
when i run it from the online api reference, and when i run it from my php curl request I get
{"details":"Cart is empty or missing","message":"cart_is_empty_or_missing"}
Here is the data i am submitting
Array ( [orderType] => Array ( [id] => existing-order-type-id ) [orderCart] => Array ( [lineItems] => Array ( [0] => Array ( [item] => Array ( [id] => existing-line-item-id ) ) ) ) )