diff --git a/reference/marketing.v2.yml b/reference/marketing.v2.yml
index 47a422434..99c0550e8 100644
--- a/reference/marketing.v2.yml
+++ b/reference/marketing.v2.yml
@@ -943,7 +943,7 @@ components:
       properties:
         name:
           type: string
-          description: The name of the coupon.
+          description: The name of the coupon. Value must be unique.
           example: Australia Customers Discount
           maxLength: 100
         type: