Merge pull request #46789 from aerele/order-tax-table

fix: map tax table while creating purchase order from sales order

erpnext/selling/doctype/sales_order/sales_order.py

@@ -1460,6 +1460,8 @@ def make_purchase_order(source_name, selected_items=None, target_doc=None):
 			target.customer = target.customer_name = target.shipping_address = None
 
 		target.run_method("set_missing_values")
+		if not target.taxes:
+			target.append_taxes_from_item_tax_template()
 		target.run_method("calculate_taxes_and_totals")
 
 	def update_item(source, target, source_parent):

erpnext/selling/doctype/sales_order/test_sales_order.py

@@ -2360,6 +2360,38 @@ class TestSalesOrder(AccountsTestMixin, IntegrationTestCase):
 		sre_doc.reload()
 		self.assertTrue(sre_doc.status == "Delivered")
 
+	def test_item_tax_transfer_from_sales_to_purchase(self):
+		from erpnext.selling.doctype.sales_order.sales_order import make_purchase_order
+
+		item_tax = frappe.new_doc("Item Tax Template")
+		item_tax.title = "Test Item Tax Template"
+		item_tax.company = "_Test Company"
+		item_tax.append("taxes", {"tax_type": "_Test Account Service Tax - _TC", "tax_rate": 2})
+		item_tax.save()
+
+		item_group = frappe.get_doc("Item Group", "_Test Item Group")
+		item_group.append("taxes", {"item_tax_template": "Test Item Tax Template - _TC"})
+		item_group.save()
+
+		so = make_sales_order(item_code="_Test Item", qty=1, do_not_submit=1)
+		so.append(
+			"taxes",
+			{
+				"account_head": "_Test Account Service Tax - _TC",
+				"charge_type": "On Net Total",
+				"description": "TDS",
+				"doctype": "Sales Taxes and Charges",
+				"rate": 2,
+			},
+		)
+		so.submit()
+
+		po = make_purchase_order(so.name, selected_items=so.items)
+		po.supplier = "_Test Supplier"
+		po.items[0].rate = 100
+		po.submit()
+		self.assertEqual(po.taxes[0].tax_amount, 2)
+
 
 def automatically_fetch_payment_terms(enable=1):
 	accounts_settings = frappe.get_doc("Accounts Settings")