I started with some orders data in order dashboard, but after sending an order through API with blank fullfillment type, the order dashboard seems to be crashed and now is empty. I’ve even tried “create order” through orders dashboard (seems to be successfull), but still no any order record shown in dashboard.
By the way i also want to know if is possible to have blank fullfillment type, as we trying to do “Self Serve” orders which this type seems to be impossible, so we have to leave it blank to differentiate from regular PICKUP order.
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Based on the information you’ve provided, the following documentation will help answer your question:
Additional Documentation
Verify your Pickup Order
Take a Pickup Order and Pay for It
Orders API: How It Works
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The Orders API does require a fulfillment type to be specified when creating an order. The supported types are SHIPMENT, PICKUP, and DELIVERY. If you’re trying to differentiate between regular PICKUP orders and “Self Serve” orders, you might consider using the metadata field in the Order object to add custom labels or identifiers to your orders.
As for the issue with the order dashboard, it’s possible that there was a temporary glitch or delay in displaying the orders. If the problem persists, it might be a technical issue that needs further investigation.
This answer was reviewed by @Bryan-Square.
It’s the next day and i’ve also tried to create a new sandbox test account, still no data shown in order dashboard at all for both account, where do i submit a request for investigation?
What’s your application ID and an order_id
that’s not showing in the Dashboard? If it’s a DELIVERY
order have you joined the private beta? 
Hi, now i can see the data in order dashboard again today. The error data (that has blank fullfillment type) seems to disaapeared from the dashboard. but I probably going just leave it as it is without trying crash it again.
By the way, here is the API call that i think caused the error ( API reterns 200 ) for your reference if Square considering fixing it
{
"order": {
"location_id": "LRY7CFFZS62P2",
"source": {
"name": "060320250446
},
"line_items": [
{
"name": "Veggie",
"quantity": "1",
"catalog_object_id": "46W62HSSF4MYWFUJYBCJYAEQ",
"base_price_money": {
"amount": 500,
"currency": "AUD"
}
}
],
"fulfillments": [
null
],
"state": "OPEN"
},
"idempotency_key": "67c9289c2daf15.08003979"
}
Orders created without just won’t show in the Order Manager on Dashboard. There must have been an issue somewhere else if the Order Manager Dashboard itself was showing an error. 
This is my application id
App ID: sq0idp-jPeau9M14q5PNcFu9_p-9A
Was there any error logged from March 10 or 11?
With our API Logs you can check for error up to 28 days ago. From what I see there aren’t any errors on those days. 