diff --git a/docs/reference/idempotency.md b/docs/reference/idempotency.md
index b4dd765..e8fae9e 100644
--- a/docs/reference/idempotency.md
+++ b/docs/reference/idempotency.md
@@ -40,3 +40,6 @@ By incorporating the `idempotencyKey` with specific game and item IDs:
 * Players purchases are singular. Any effort to replicate the transaction will fail.
 
 * Should any interruptions occur during the buying process, like server outages or communication failures, the transaction can be re-validated without the threat of repeated charges.
+
+::: info
+Since the `idempotencyKey` is global among all payments, developers should consider incorporating a unique value to further differentiate a payment. For example, use  `destination` address when appropriate or also include a developer-specific random GUID.