fix: promotional scheme min and max amount configuration

(cherry picked from commit a8fd92d)

erpnext/accounts/doctype/promotional_scheme/promotional_scheme.py

@@ -34,8 +34,8 @@
 other_fields = [
 	"min_qty",
 	"max_qty",
-	"min_amt",
-	"max_amt",
+	"min_amount",
+	"max_amount",
 	"priority",
 	"warehouse",
 	"threshold_percentage",
@@ -246,7 +246,11 @@ def prepare_pricing_rule(
 def set_args(args, pr, doc, child_doc, discount_fields, child_doc_fields):
 	pr.update(args)
 	for field in other_fields + discount_fields:
-		pr.set(field, child_doc_fields.get(field))
+		target_field = field
+		if target_field in ["min_amount", "max_amount"]:
+			target_field = "min_amt" if field == "min_amount" else "max_amt"
+
+		pr.set(target_field, child_doc_fields.get(field))
 
 	pr.promotional_scheme_id = child_doc_fields.name
 	pr.promotional_scheme = doc.name

erpnext/accounts/doctype/promotional_scheme/test_promotional_scheme.py

@@ -90,6 +90,23 @@ def test_change_applicable_for_in_promotional_scheme(self):
 		price_rules = frappe.get_all("Pricing Rule", filters={"promotional_scheme": ps.name})
 		self.assertEqual(price_rules, [])
 
+	def test_min_max_amount_configuration(self):
+		ps = make_promotional_scheme()
+		ps.price_discount_slabs[0].min_amount = 10
+		ps.price_discount_slabs[0].max_amount = 1000
+		ps.save()
+
+		price_rules_data = frappe.db.get_value(
+			"Pricing Rule", {"promotional_scheme": ps.name}, ["min_amt", "max_amt"], as_dict=1
+		)
+
+		self.assertEqual(price_rules_data.min_amt, 10)
+		self.assertEqual(price_rules_data.max_amt, 1000)
+
+		frappe.delete_doc("Promotional Scheme", ps.name)
+		price_rules = frappe.get_all("Pricing Rule", filters={"promotional_scheme": ps.name})
+		self.assertEqual(price_rules, [])
+
 
 def make_promotional_scheme(**args):
 	args = frappe._dict(args)