Added override for ERPNext updating a Lead's mobile_no field even if that phone number isn't defined as primary_mobile in the linked Contact

rangeldigital/utilities/contact/contact_hooks.py

@@ -0,0 +1,27 @@
+import frappe
+
+# Override ERPNext's hook that will set a Lead's mobile_no field based on a Contact's phone number even if it's not a mobile number
+def update_lead_phone_numbers(contact, method):
+    if not contact.phone_nos:
+        return
+
+    contact_lead = contact.get_link_for("Lead")
+    if not contact_lead:
+        return
+
+    # Get list of phones explicitly marked as primary mobile numbers
+    mobile_nos = [
+        phone_doc.phone
+        for phone_doc in contact.phone_nos
+        if phone_doc.is_primary_mobile_no
+    ]
+
+    # If no mobile numbers were marked, clear Lead.mobile_no
+    if not mobile_nos:
+        lead = frappe.get_doc("Lead", contact_lead)
+
+        if lead.mobile_no:
+            # Optional: only unset if the current value matches one of the Contact's phones
+            contact_phone_values = {p.phone for p in contact.phone_nos}
+            if lead.mobile_no in contact_phone_values:
+                lead.db_set("mobile_no", None)