Ah ha! Thank you! That - almost - worked! It finally returned something:Array([errors] => Array([line_items_by_fulfillment_order] => expected Hash to be a Array))Which makes no sense to me...

I am trying to SET the shipment info on an order. So I'm doing a POST to/admin/api/2023-01/orders/4961628160182/fulfillment_orders.jsonand this is exactly it...Array([fulfillment] => Array([notify_customer] => 1[tracking_info] => Array([number] => 92...

Yes, I am using "/admin/api/2023-01/orders/4961628160182/fulfillment_orders.json" and stillgetting nothing returned from my post. Did you see my message that if Iuse the URL in my browser I get:{"errors":"The api_client does not have the required per...

Thanks. My URL is good and I'm still getting NOTHING returned from my POST.I've got every possible permission:write_inventoryread_locationswrite_ordersread_inventoryread_orderswrite_assigned_fulfillment_ordersread_assigned_fulfillment_orderswrite_ful...

Unfortunately, that made no difference I believe I have the proper scopes:write_inventoryread_locationswrite_ordersread_inventoryread_orderswrite_assigned_fulfillment_ordersread_assigned_fulfillment_orderswrite_fulfillmentsread_fulfillmentswrite_mer...

What exactly is the endpoint for this post?  I tried "--store--/admin/api/2023-01/orders/fulfillment_orders/{internal_order_id}"  and got a blank response and the order wasn't fulfilled.

Did you ever find a solution to this?  I am in the exact same boat.  The prior procedure was very straightforward and I don't want to go through a bunch of hoops if I don't have to.  Like why would I even NEED a callback function if I am the one who ...