fix(manufacturing): update work order status on partial pick-list transfer (backport #56800)

Backport of frappe/erpnext#56800 (via #56836/#57001). When a Pick List
transfers only some of the required raw materials, the min-fraction
rule keeps material_transferred_for_manufacturing at 0, leaving the
Work Order stuck at "Not Started" even though material is already in
WIP. Treat any submitted pick-list-linked Material Transfer stock
entry as evidence the order has started.

erpnext/manufacturing/doctype/work_order/test_work_order.py

@@ -1545,6 +1545,38 @@ class TestWorkOrder(FrappeTestCase):
 		work_order.reload()
 		self.assertEqual(work_order.material_transferred_for_manufacturing, 2.0)
 
+	def test_status_in_process_when_only_one_required_item_transferred(self):
+		"""Stock Entry created from a Pick List that picked only one of the required items:
+		min-fraction keeps material_transferred_for_manufacturing at 0, but the work order must
+		still move to In Process because material is already in WIP."""
+		from erpnext.manufacturing.doctype.work_order.work_order import create_pick_list
+		from erpnext.stock.doctype.pick_list.pick_list import create_stock_entry
+
+		work_order = make_wo_order_test_record(
+			planned_start_date=now(), qty=2, source_warehouse="Stores - _TC"
+		)
+		test_stock_entry.make_stock_entry(
+			item_code="_Test Item", target="Stores - _TC", qty=10, basic_rate=5000.0
+		)
+		test_stock_entry.make_stock_entry(
+			item_code="_Test Item Home Desktop 100", target="Stores - _TC", qty=10, basic_rate=1000.0
+		)
+
+		pick_list = create_pick_list(work_order.name, for_qty=work_order.qty)
+		# pick only _Test Item; the other required item is left out of this pick list
+		pick_list.pick_manually = 1
+		pick_list.locations = [loc for loc in pick_list.locations if loc.item_code == "_Test Item"]
+		pick_list.save()
+		pick_list.submit()
+
+		stock_entry = frappe.get_doc(create_stock_entry(frappe.as_json(pick_list.as_dict())))
+		self.assertEqual(stock_entry.fg_completed_qty, 0.0)
+		stock_entry.submit()
+
+		work_order.reload()
+		self.assertEqual(work_order.material_transferred_for_manufacturing, 0.0)
+		self.assertEqual(work_order.status, "In Process")
+
 	def test_backflushed_batch_raw_materials_based_on_transferred(self):
 		frappe.db.set_single_value(
 			"Manufacturing Settings",

erpnext/manufacturing/doctype/work_order/work_order.py

@@ -406,7 +406,11 @@ class WorkOrder(Document):
 		elif self.docstatus == 1:
 			if status not in ["Closed", "Stopped"]:
 				status = "Not Started"
-				if flt(self.material_transferred_for_manufacturing) > 0 or self.skip_transfer:
+				if (
+					flt(self.material_transferred_for_manufacturing) > 0
+					or self.skip_transfer
+					or self.has_transferred_material()
+				):
 					status = "In Process"
 
 				precision = frappe.get_precision("Work Order", "produced_qty")
@@ -425,6 +429,26 @@ class WorkOrder(Document):
 
 		return status
 
+	def has_transferred_material(self):
+		"""True if any raw material was transferred against this work order via a pick list
+		(these leave material_transferred_for_manufacturing at 0 via the min-fraction rule)."""
+		ste = frappe.qb.DocType("Stock Entry")
+		ste_child = frappe.qb.DocType("Stock Entry Detail")
+		qty = (
+			frappe.qb.from_(ste)
+			.inner_join(ste_child)
+			.on(ste_child.parent == ste.name)
+			.select(Sum(ste_child.transfer_qty))
+			.where(
+				(ste.work_order == self.name)
+				& (ste.docstatus == 1)
+				& (ste.purpose == "Material Transfer for Manufacture")
+				& (ste.is_return == 0)
+				& (ste.pick_list.isnotnull())
+			)
+		).run()[0][0]
+		return flt(qty) > 0
+
 	def update_work_order_qty(self):
 		"""Update **Manufactured Qty** and **Material Transferred for Qty** in Work Order
 		based on Stock Entry"""