fix: unlink custom fields in patch

erpnext/patches.txt

@@ -346,4 +346,4 @@ erpnext.patches.v13_0.job_card_status_on_hold
 erpnext.patches.v14_0.copy_is_subcontracted_value_to_is_old_subcontracting_flow
 erpnext.patches.v14_0.migrate_gl_to_payment_ledger
 erpnext.patches.v14_0.crm_ux_cleanup
-erpnext.patches.v14_0.remove_india_localisation # 07-07-2022
+erpnext.patches.v14_0.remove_india_localisation # 14-07-2022

erpnext/patches/v13_0/show_india_localisation_deprecation_warning.py

@@ -3,7 +3,10 @@ import frappe
 
 
 def execute():
-	if not frappe.db.exists("Company", {"country": "India"}):
+	if (
+		not frappe.db.exists("Company", {"country": "India"})
+		or "india_compliance" in frappe.get_installed_apps()
+	):
 		return
 
 	click.secho(

erpnext/patches/v14_0/remove_india_localisation.py

@@ -3,6 +3,24 @@ import frappe
 
 
 def execute():
+	if "india_compliance" in frappe.get_installed_apps():
+		return
+
+	delete_docs()
+	unlink_custom_fields()
+
+	if not frappe.db.exists("Company", {"country": "India"}):
+		return
+
+	click.secho(
+		"India-specific regional features have been moved to a separate app."
+		" Please install India Compliance to continue using these features:"
+		" https://github.com/resilient-tech/india-compliance",
+		fg="yellow",
+	)
+
+
+def delete_docs():
 	to_delete = {
 		"DocType": [
 			"C-Form",
@@ -44,12 +62,10 @@ def execute():
 			ignore_missing=True,
 		)
 
-	if not frappe.db.exists("Company", {"country": "India"}):
-		return
 
-	click.secho(
-		"India-specific regional features have been moved to a separate app."
-		" Please install India Compliance to continue using these features:"
-		" https://github.com/resilient-tech/india-compliance",
-		fg="yellow",
+def unlink_custom_fields():
+	frappe.db.set_value(
+		"Custom Field",
+		{"dt": "Item", "fieldname": "gst_hsn_code"},
+		{"fieldtype": "Data", "options": ""},
 	)