From 9613d72d8182305148cf0fb4915cb013ea37839d Mon Sep 17 00:00:00 2001
From: diptanilsaha <diptanil@frappe.io>
Date: Thu, 13 Aug 2026 22:51:24 +0530
Subject: [PATCH] fix: patch to delete the `crm_deal` custom fields

---
 erpnext/patches.txt                           |  1 +
 .../v16_0/remove_frappe_crm_custom_fields.py  | 27 +++++++++++++++++++
 2 files changed, 28 insertions(+)
 create mode 100644 erpnext/patches/v16_0/remove_frappe_crm_custom_fields.py

diff --git a/erpnext/patches.txt b/erpnext/patches.txt
index e023cff4b3f..d5eb474d62e 100644
--- a/erpnext/patches.txt
+++ b/erpnext/patches.txt
@@ -513,3 +513,4 @@ erpnext.patches.v16_0.rename_italy_customer_name_fields
 erpnext.patches.v16_0.recalculate_purchase_receipt_billing_status
 erpnext.patches.v16_0.recalculate_mixed_purchase_receipt_billing_status
 erpnext.patches.v16_0.repair_work_order_material_transfer
+erpnext.patches.v16_0.remove_frappe_crm_custom_fields
diff --git a/erpnext/patches/v16_0/remove_frappe_crm_custom_fields.py b/erpnext/patches/v16_0/remove_frappe_crm_custom_fields.py
new file mode 100644
index 00000000000..3f1c8e1a6f4
--- /dev/null
+++ b/erpnext/patches/v16_0/remove_frappe_crm_custom_fields.py
@@ -0,0 +1,27 @@
+import frappe
+from frappe.custom.doctype.custom_field.custom_field import delete_custom_fields
+
+from erpnext.crm.doctype.crm_settings.crm_settings import CRMSettings
+
+
+def execute():
+	"""Delete the `crm_deal` fields on Quotation and Customer if Frappe CRM Data Synchronization is disabled and there's no data on those fields."""
+
+	crm_deal_exists_in_quotation = frappe.db.has_column("Quotation", "crm_deal") and frappe.get_all(
+		"Quotation", filters={"crm_deal": ["is", "set"]}, limit=1
+	)
+
+	crm_deal_exists_in_customer = frappe.db.has_column("Customer", "crm_deal") and frappe.get_all(
+		"Customer", filters={"crm_deal": ["is", "set"]}, limit=1
+	)
+
+	enable_frappe_crm_data_sync = frappe.get_single_value(
+		"CRM Settings", "enable_frappe_crm_data_synchronization"
+	)
+
+	if enable_frappe_crm_data_sync or crm_deal_exists_in_quotation or crm_deal_exists_in_customer:
+		return
+
+	custom_fields = CRMSettings.get_frappe_crm_custom_fields()
+
+	delete_custom_fields(custom_fields)