fix: incorrect landed cost voucher amount

(cherry picked from commit d78a1e7)

erpnext/stock/doctype/landed_cost_voucher/landed_cost_voucher.py

@@ -122,6 +122,13 @@ def set_applicable_charges_on_item(self):
 				self.get("items")[item_count - 1].applicable_charges += diff
 
 	def validate_applicable_charges_for_item(self):
+		if self.distribute_charges_based_on == "Distribute Manually" and len(self.taxes) > 1:
+			frappe.throw(
+				_(
+					"Please keep one Applicable Charges, when 'Distribute Charges Based On' is 'Distribute Manually'. For more charges, please create another Landed Cost Voucher."
+				)
+			)
+
 		based_on = self.distribute_charges_based_on.lower()
 
 		if based_on != "distribute manually":

erpnext/stock/doctype/purchase_receipt/purchase_receipt.py

@@ -1200,16 +1200,16 @@ def get_item_account_wise_additional_cost(purchase_document):
 	for lcv in landed_cost_vouchers:
 		landed_cost_voucher_doc = frappe.get_doc("Landed Cost Voucher", lcv.parent)
 
+		based_on_field = None
 		# Use amount field for total item cost for manually cost distributed LCVs
-		if landed_cost_voucher_doc.distribute_charges_based_on == "Distribute Manually":
-			based_on_field = "amount"
-		else:
+		if landed_cost_voucher_doc.distribute_charges_based_on != "Distribute Manually":
 			based_on_field = frappe.scrub(landed_cost_voucher_doc.distribute_charges_based_on)
 
 		total_item_cost = 0
 
-		for item in landed_cost_voucher_doc.items:
-			total_item_cost += item.get(based_on_field)
+		if based_on_field:
+			for item in landed_cost_voucher_doc.items:
+				total_item_cost += item.get(based_on_field)
 
 		for item in landed_cost_voucher_doc.items:
 			if item.receipt_document == purchase_document: