diff --git a/backend/.env.example b/backend/.env.example
index 4e3103b..1d15ff0 100644
--- a/backend/.env.example
+++ b/backend/.env.example
@@ -64,6 +64,8 @@ WHATSAPP_PHONE_NUMBER_ID=
 WHATSAPP_BUSINESS_ACCOUNT_ID=
 # Meta App ID
 META_APP_ID=
+# Facebook Login for Business configuration ID (Embedded Signup). Not a secret.
+META_EMBEDDED_SIGNUP_CONFIG_ID=
 # Urmi business WhatsApp number (E.164 without +)
 WHATSAPP_BUSINESS_PHONE=919411257916
 WHATSAPP_API_VERSION=v21.0