fix: Cascade deletion for Company

erpnext/hooks.py

@@ -300,6 +300,9 @@ doc_events = {
 	},
 	('Quotation', 'Sales Order', 'Sales Invoice'): {
 		'validate': ["erpnext.erpnext_integrations.taxjar_integration.set_sales_tax"]
+	},
+	"Company": {
+		"on_trash": "erpnext.regional.india.utils.delete_gst_settings_for_company"
 	}
 }
 

erpnext/regional/india/utils.py

@@ -849,4 +849,17 @@ def get_depreciation_amount(asset, depreciable_value, row):
 
 		depreciation_amount = flt(depreciable_value * (flt(rate_of_depreciation) / 100))
 
-	return depreciation_amount
+	return depreciation_amount
+
+def delete_gst_settings_for_company(doc, method):
+	if doc.country != 'India':
+		return
+
+	gst_settings = frappe.get_doc("GST Settings")
+
+	for d in reversed(gst_settings.get('gst_accounts')):
+		if d.company == doc.name:
+			gst_settings.remove(d)
+
+	gst_settings.save()
+

erpnext/setup/doctype/company/company.py

@@ -393,6 +393,10 @@ class Company(NestedSet):
 		frappe.db.sql("delete from `tabPurchase Taxes and Charges Template` where company=%s", self.name)
 		frappe.db.sql("delete from `tabItem Tax Template` where company=%s", self.name)
 
+		# delete Process Deferred Accounts if no GL Entry found
+		if not frappe.db.get_value('GL Entry', {'company': self.name}):
+			frappe.db.sql("delete from `tabProcess Deferred Accounting` where company=%s", self.name)
+
 @frappe.whitelist()
 def enqueue_replace_abbr(company, old, new):
 	kwargs = dict(queue="long", company=company, old=old, new=new)