chore: ledger invariant check report

erpnext/stock/report/stock_ledger_invariant_check/stock_ledger_invariant_check.js

@@ -0,0 +1,38 @@
+// Copyright (c) 2016, Frappe Technologies Pvt. Ltd. and contributors
+// For license information, please see license.txt
+/* eslint-disable */
+
+const DIFFERNCE_FIELD_NAMES = [
+	"difference_in_qty",
+	"fifo_qty_diff",
+	"fifo_value_diff",
+	"fifo_valuation_diff",
+	"valuation_diff",
+	"fifo_difference_diff"
+];
+
+frappe.query_reports["Stock Ledger Invariant Check"] = {
+	"filters": [
+	  {
+	   "fieldname": "item_code",
+	   "fieldtype": "Link",
+	   "label": "Item",
+	   "mandatory": 1,
+	   "options": "Item",
+	  },
+	  {
+	   "fieldname": "warehouse",
+	   "fieldtype": "Link",
+	   "label": "Warehouse",
+	   "mandatory": 1,
+	   "options": "Warehouse",
+	  }
+	],
+	formatter (value, row, column, data, default_formatter) {
+		value = default_formatter(value, row, column, data);
+		if (DIFFERNCE_FIELD_NAMES.includes(column.fieldname) && Math.abs(data[column.fieldname]) > 0.001) {
+			value = "<span style='color:red'>" + value + "</span>";
+		}
+		return value;
+	},
+};

erpnext/stock/report/stock_ledger_invariant_check/stock_ledger_invariant_check.json

@@ -0,0 +1,26 @@
+{
+ "add_total_row": 0,
+ "columns": [],
+ "creation": "2021-12-16 06:31:23.290916",
+ "disable_prepared_report": 0,
+ "disabled": 0,
+ "docstatus": 0,
+ "doctype": "Report",
+ "filters": [],
+ "idx": 0,
+ "is_standard": "Yes",
+ "modified": "2021-12-16 09:55:58.341764",
+ "modified_by": "Administrator",
+ "module": "Stock",
+ "name": "Stock Ledger Invariant Check",
+ "owner": "Administrator",
+ "prepared_report": 0,
+ "ref_doctype": "Stock Ledger Entry",
+ "report_name": "Stock Ledger Invariant Check",
+ "report_type": "Script Report",
+ "roles": [
+  {
+   "role": "System Manager"
+  }
+ ]
+}

erpnext/stock/report/stock_ledger_invariant_check/stock_ledger_invariant_check.py

@@ -0,0 +1,216 @@
+# Copyright (c) 2021, Frappe Technologies Pvt. Ltd. and contributors
+# License: GNU GPL v3. See LICENSE
+
+import json
+
+import frappe
+
+SLE_FIELDS = (
+	"name",
+	"posting_date",
+	"posting_time",
+	"creation",
+	"voucher_type",
+	"voucher_no",
+	"actual_qty",
+	"qty_after_transaction",
+	"stock_queue",
+	"batch_no",
+	"stock_value",
+	"stock_value_difference",
+	"valuation_rate",
+)
+
+
+def execute(filters=None):
+	columns = get_columns()
+	data = get_data(filters)
+	return columns, data
+
+
+def get_data(filters):
+	sles = get_stock_ledger_entries(filters)
+	return add_invariant_check_fields(sles)
+
+
+def get_stock_ledger_entries(filters):
+	filters.is_cancelled = 0
+
+	return frappe.get_all(
+		"Stock Ledger Entry",
+		fields=SLE_FIELDS,
+		filters={"item_code": filters.item_code, "warehouse": filters.warehouse},
+		order_by="timestamp(posting_date, posting_time), creation",
+	)
+
+
+def add_invariant_check_fields(sles):
+	balance_qty = 0.0
+	for idx, sle in enumerate(sles):
+		queue = json.loads(sle.stock_queue)
+
+		fifo_qty = 0.0
+		fifo_value = 0.0
+		for qty, rate in queue:
+			fifo_qty += qty
+			fifo_value += qty * rate
+
+		balance_qty += sle.actual_qty
+		if sle.voucher_type == "Stock Reconciliation" and not sle.batch_no:
+			balance_qty = sle.qty_after_transaction
+
+		sle.fifo_queue_qty = fifo_qty
+		sle.fifo_stock_value = fifo_value
+		sle.fifo_valuation_rate = fifo_value / fifo_qty if fifo_qty else None
+		sle.balance_value_by_qty = (
+			sle.stock_value / sle.qty_after_transaction if sle.qty_after_transaction else None
+		)
+		sle.expected_qty_after_transaction = balance_qty
+
+		# set difference fields
+		sle.difference_in_qty = sle.qty_after_transaction - sle.expected_qty_after_transaction
+		sle.fifo_qty_diff = sle.qty_after_transaction - fifo_qty
+		sle.fifo_value_diff = sle.stock_value - fifo_value
+		sle.fifo_valuation_diff = (
+			sle.valuation_rate - sle.fifo_valuation_rate if sle.fifo_valuation_rate else None
+		)
+		sle.valuation_diff = (
+			sle.valuation_rate - sle.balance_value_by_qty if sle.balance_value_by_qty else None
+		)
+
+		if idx > 0:
+			sle.fifo_stock_diff = sle.fifo_stock_value - sles[idx - 1].fifo_stock_value
+			sle.fifo_difference_diff = sle.fifo_stock_diff - sle.stock_value_difference
+
+	return sles
+
+
+def get_columns():
+	return [
+		{
+			"fieldname": "name",
+			"fieldtype": "Link",
+			"label": "Stock Ledger Entry",
+			"options": "Stock Ledger Entry",
+		},
+		{
+			"fieldname": "posting_date",
+			"fieldtype": "Date",
+			"label": "Posting Date",
+		},
+		{
+			"fieldname": "posting_time",
+			"fieldtype": "Time",
+			"label": "Posting Time",
+		},
+		{
+			"fieldname": "creation",
+			"fieldtype": "Datetime",
+			"label": "Creation",
+		},
+		{
+			"fieldname": "voucher_type",
+			"fieldtype": "Link",
+			"label": "Voucher Type",
+			"options": "DocType",
+		},
+		{
+			"fieldname": "voucher_no",
+			"fieldtype": "Dynamic Link",
+			"label": "Voucher No",
+			"options": "voucher_type",
+		},
+		{
+			"fieldname": "actual_qty",
+			"fieldtype": "Float",
+			"label": "Qty Change",
+		},
+		{
+			"fieldname": "qty_after_transaction",
+			"fieldtype": "Float",
+			"label": "(A) Qty After Transaction",
+		},
+		{
+			"fieldname": "expected_qty_after_transaction",
+			"fieldtype": "Float",
+			"label": "(B) Expected Qty After Transaction",
+		},
+		{
+			"fieldname": "difference_in_qty",
+			"fieldtype": "Float",
+			"label": "A - B",
+		},
+		{
+			"fieldname": "stock_queue",
+			"fieldtype": "Data",
+			"label": "FIFO Queue",
+		},
+
+		{
+			"fieldname": "fifo_queue_qty",
+			"fieldtype": "Float",
+			"label": "(C) Total qty in queue",
+		},
+		{
+			"fieldname": "fifo_qty_diff",
+			"fieldtype": "Float",
+			"label": "A - C",
+		},
+		{
+			"fieldname": "stock_value",
+			"fieldtype": "Float",
+			"label": "(D) Balance Stock Value",
+		},
+		{
+			"fieldname": "fifo_stock_value",
+			"fieldtype": "Float",
+			"label": "(E) Balance Stock Value in Queue",
+		},
+		{
+			"fieldname": "fifo_value_diff",
+			"fieldtype": "Float",
+			"label": "D - E",
+		},
+
+		{
+			"fieldname": "stock_value_difference",
+			"fieldtype": "Float",
+			"label": "(F) Stock Value Difference",
+		},
+		{
+			"fieldname": "fifo_stock_diff",
+			"fieldtype": "Float",
+			"label": "(G) Stock Value difference (FIFO queue)",
+		},
+		{
+			"fieldname": "fifo_difference_diff",
+			"fieldtype": "Float",
+			"label": "F - G",
+		},
+		{
+			"fieldname": "valuation_rate",
+			"fieldtype": "Float",
+			"label": "(H) Valuation Rate",
+		},
+		{
+			"fieldname": "fifo_valuation_rate",
+			"fieldtype": "Float",
+			"label": "(I) Valuation Rate as per FIFO",
+		},
+
+		{
+			"fieldname": "fifo_valuation_diff",
+			"fieldtype": "Float",
+			"label": "H - I",
+		},
+		{
+			"fieldname": "balance_value_by_qty",
+			"fieldtype": "Float",
+			"label": "(J) Valuation = Value (D) ÷ Qty (A)",
+		},
+		{
+			"fieldname": "valuation_diff",
+			"fieldtype": "Float",
+			"label": "H - J",
+		},
+	]

erpnext/stock/report/test_reports.py

@@ -41,6 +41,12 @@
 	("Total Stock Summary", {"group_by": "warehouse",}),
 	("Batch Item Expiry Status", {}),
 	("Stock Ageing", {"range1": 30, "range2": 60, "range3": 90, "_optional": True}),
+	("Stock Ledger Invariant Check",
+		{
+			"warehouse": "_Test Warehouse - _TC",
+			"item": "_Test Item"
+		}
+	),
 ]
 
 OPTIONAL_FILTERS = {