diff --git a/crm/lead_syncing/doctype/lead_sync_source/lead_sync_source.json b/crm/lead_syncing/doctype/lead_sync_source/lead_sync_source.json
index 19c2907a..4f3a859a 100644
--- a/crm/lead_syncing/doctype/lead_sync_source/lead_sync_source.json
+++ b/crm/lead_syncing/doctype/lead_sync_source/lead_sync_source.json
@@ -62,8 +62,7 @@
    "fieldname": "facebook_lead_form",
    "fieldtype": "Link",
    "label": "Facebook Lead Form",
-   "options": "Facebook Lead Form",
-   "unique": 1
+   "options": "Facebook Lead Form"
   },
   {
    "default": "1",
@@ -75,7 +74,7 @@
  "grid_page_length": 50,
  "index_web_pages_for_search": 1,
  "links": [],
- "modified": "2025-10-02 12:33:45.810895",
+ "modified": "2025-10-03 21:13:25.660629",
  "modified_by": "Administrator",
  "module": "Lead Syncing",
  "name": "Lead Sync Source",
diff --git a/crm/lead_syncing/doctype/lead_sync_source/lead_sync_source.py b/crm/lead_syncing/doctype/lead_sync_source/lead_sync_source.py
index 2e2cc81b..37f89a67 100644
--- a/crm/lead_syncing/doctype/lead_sync_source/lead_sync_source.py
+++ b/crm/lead_syncing/doctype/lead_sync_source/lead_sync_source.py
@@ -24,6 +24,21 @@ class LeadSyncSource(Document):
 		type: DF.Literal["Facebook"]
 	# end: auto-generated types
 
+	def validate(self):
+		self.validate_same_fb_form_active()
+
+	def validate_same_fb_form_active(self):
+		if not self.enabled:
+			return
+
+		if not self.facebook_lead_form:
+			return
+
+		already_active = frappe.db.exists("Lead Sync Source", {"enabled": 1, "facebook_lead_form": self.facebook_lead_form})
+
+		if already_active:
+			frappe.throw(frappe._("A lead sync source is already enabled for this Facebook Lead Form!"))
+
 	def before_save(self):
 		if self.type == "Facebook" and self.access_token:
 			# fetch_and_store_pages_from_facebook(self.access_token)