fix: Add company field to lower deduction certificate (#34914)

diff --git a/erpnext/accounts/doctype/tax_withholding_category/tax_withholding_category.py b/erpnext/accounts/doctype/tax_withholding_category/tax_withholding_category.py
index f0146ea..ad3477e 100644
--- a/erpnext/accounts/doctype/tax_withholding_category/tax_withholding_category.py
+++ b/erpnext/accounts/doctype/tax_withholding_category/tax_withholding_category.py
@@ -215,7 +215,7 @@
 	}
 
 
-def get_lower_deduction_certificate(tax_details, pan_no):
+def get_lower_deduction_certificate(company, tax_details, pan_no):
 	ldc_name = frappe.db.get_value(
 		"Lower Deduction Certificate",
 		{
@@ -223,6 +223,7 @@
 			"tax_withholding_category": tax_details.tax_withholding_category,
 			"valid_from": (">=", tax_details.from_date),
 			"valid_upto": ("<=", tax_details.to_date),
+			"company": company,
 		},
 		"name",
 	)
@@ -255,7 +256,7 @@
 	tax_amount = 0
 
 	if party_type == "Supplier":
-		ldc = get_lower_deduction_certificate(tax_details, pan_no)
+		ldc = get_lower_deduction_certificate(inv.company, tax_details, pan_no)
 		if tax_deducted:
 			net_total = inv.tax_withholding_net_total
 			if ldc:
diff --git a/erpnext/patches.txt b/erpnext/patches.txt
index 74c8af1..03c7b01 100644
--- a/erpnext/patches.txt
+++ b/erpnext/patches.txt
@@ -332,3 +332,4 @@
 erpnext.patches.v14_0.migrate_gl_to_payment_ledger
 execute:frappe.delete_doc_if_exists("Report", "Tax Detail")
 erpnext.patches.v15_0.enable_all_leads
+erpnext.patches.v14_0.update_company_in_ldc
diff --git a/erpnext/patches/v14_0/update_company_in_ldc.py b/erpnext/patches/v14_0/update_company_in_ldc.py
new file mode 100644
index 0000000..ca95cf2
--- /dev/null
+++ b/erpnext/patches/v14_0/update_company_in_ldc.py
@@ -0,0 +1,14 @@
+# Copyright (c) 2023, Frappe Technologies Pvt. Ltd. and Contributors
+# License: MIT. See LICENSE
+
+
+import frappe
+
+from erpnext import get_default_company
+
+
+def execute():
+	company = get_default_company()
+	if company:
+		for d in frappe.get_all("Lower Deduction Certificate", pluck="name"):
+			frappe.db.set_value("Lower Deduction Certificate", d, "company", company, update_modified=False)
diff --git a/erpnext/regional/doctype/lower_deduction_certificate/lower_deduction_certificate.json b/erpnext/regional/doctype/lower_deduction_certificate/lower_deduction_certificate.json
index c32ab6b..d332b4e 100644
--- a/erpnext/regional/doctype/lower_deduction_certificate/lower_deduction_certificate.json
+++ b/erpnext/regional/doctype/lower_deduction_certificate/lower_deduction_certificate.json
@@ -10,6 +10,7 @@
   "tax_withholding_category",
   "fiscal_year",
   "column_break_3",
+  "company",
   "certificate_no",
   "section_break_3",
   "supplier",
@@ -123,11 +124,18 @@
    "label": "Tax Withholding Category",
    "options": "Tax Withholding Category",
    "reqd": 1
+  },
+  {
+   "fieldname": "company",
+   "fieldtype": "Link",
+   "label": "Company",
+   "options": "Company",
+   "reqd": 1
   }
  ],
  "index_web_pages_for_search": 1,
  "links": [],
- "modified": "2021-10-23 18:33:38.962622",
+ "modified": "2023-04-18 08:25:35.302081",
  "modified_by": "Administrator",
  "module": "Regional",
  "name": "Lower Deduction Certificate",
@@ -136,5 +144,6 @@
  "permissions": [],
  "sort_field": "modified",
  "sort_order": "DESC",
+ "states": [],
  "track_changes": 1
 }
\ No newline at end of file