correct field name
diff --git a/erpnext/buying/doctype/purchase_order/test_purchase_order.py b/erpnext/buying/doctype/purchase_order/test_purchase_order.py
index 175fb93..2af5582 100644
--- a/erpnext/buying/doctype/purchase_order/test_purchase_order.py
+++ b/erpnext/buying/doctype/purchase_order/test_purchase_order.py
@@ -118,7 +118,7 @@
 			"company": "_Test Company",
 			"supplier" : "_Test Supplier",
 			"is_subcontracted" : "No",
-			"schedule_Date": add_days(nowdate(), 1),
+			"schedule_date": add_days(nowdate(), 1),
 			"currency" : frappe.db.get_value("Company", "_Test Company", "default_currency"),
 			"conversion_factor" : 1,
 			"items" : get_same_items(),
diff --git a/erpnext/buying/doctype/supplier_quotation/supplier_quotation.py b/erpnext/buying/doctype/supplier_quotation/supplier_quotation.py
index 055ac0b..e936223 100644
--- a/erpnext/buying/doctype/supplier_quotation/supplier_quotation.py
+++ b/erpnext/buying/doctype/supplier_quotation/supplier_quotation.py
@@ -104,7 +104,7 @@
 def make_purchase_order(source_name, target_doc=None):
 	def set_missing_values(source, target):
 		target.ignore_pricing_rule = 1
-		target.schedule_Date = add_days(nowdate(), 1)
+		target.schedule_date = add_days(nowdate(), 1)
 		target.run_method("set_missing_values")
 		target.run_method("get_schedule_dates")
 		target.run_method("calculate_taxes_and_totals")
diff --git a/erpnext/stock/doctype/material_request/material_request.py b/erpnext/stock/doctype/material_request/material_request.py
index 3d0a086..5719378 100644
--- a/erpnext/stock/doctype/material_request/material_request.py
+++ b/erpnext/stock/doctype/material_request/material_request.py
@@ -228,7 +228,7 @@
 @frappe.whitelist()
 def make_purchase_order(source_name, target_doc=None):
 	def postprocess(source, target_doc):
-		target_doc.schedule_Date = add_days(nowdate(), 1)
+		target_doc.schedule_date = add_days(nowdate(), 1)
 		set_missing_values(source, target_doc)
 
 	doclist = get_mapped_doc("Material Request", source_name, 	{
@@ -288,7 +288,7 @@
 
 	def postprocess(source, target_doc):
 		target_doc.supplier = source_name
-		target_doc.schedule_Date = add_days(nowdate(), 1)
+		target_doc.schedule_date = add_days(nowdate(), 1)
 
 		target_doc.set("items", [d for d in target_doc.get("items")
 			if d.get("item_code") in supplier_items and d.get("qty") > 0])