Set is_pos to 0 in Opening Invoice Tool (#13810)

erpnext/accounts/doctype/opening_invoice_creation_tool/opening_invoice_creation_tool.py

@@ -138,7 +138,8 @@ class OpeningInvoiceCreationTool(Document):
 			income_expense_account_field = "expense_account"
 
 		item = get_item_dict()
-		return frappe._dict({
+
+		args = frappe._dict({
 			"items": [item],
 			"is_opening": "Yes",
 			"set_posting_time": 1,
@@ -150,6 +151,11 @@ class OpeningInvoiceCreationTool(Document):
 			"currency": frappe.db.get_value("Company", self.company, "default_currency")
 		})
 
+		if self.invoice_type == "Sales":
+			args["is_pos"] = 0
+
+		return args
+
 @frappe.whitelist()
 def get_temporary_opening_account(company=None):
 	if not company: