frappe.exceptions.ValidationError: At least one mode of payment is required for POS invoice

ERPNext
,
1

I tried creating an invoice with Frappe REST API like this and got the error in the title

{
   "customer": "Test",
		"series": "SINV-.YY.-",
	"date": "10-05-2023",
	"docstatus": 1,
	"update_stock": 1,
	
	"is_pos": 1,
	"pos_profile": "Prof",
	"submit_on_creation": true,
	"mode_of_payment": "Cash",
   "items": [
			{
					"item_code": "1001",
					"qty": 5,
					"rate": 100
			}

	  ]
	


}