diff --git a/docs/src/api/methods/_getSignatureStatuses.mdx b/docs/src/api/methods/_getSignatureStatuses.mdx
index 25bcbc326b..7c52c85dcd 100644
--- a/docs/src/api/methods/_getSignatureStatuses.mdx
+++ b/docs/src/api/methods/_getSignatureStatuses.mdx
@@ -12,7 +12,7 @@ import {
 
 ## getSignatureStatuses
 
-Returns the statuses of a list of signatures.
+Returns the statuses of a list of signatures. Each signature must be a [txid](/terminology#transaction-id), the first signature of a transaction.
 
 :::info
 Unless the `searchTransactionHistory` configuration parameter is included,
diff --git a/docs/src/api/websocket/_signatureSubscribe.mdx b/docs/src/api/websocket/_signatureSubscribe.mdx
index 70d0b60269..d918c027d7 100644
--- a/docs/src/api/websocket/_signatureSubscribe.mdx
+++ b/docs/src/api/websocket/_signatureSubscribe.mdx
@@ -13,6 +13,7 @@ import {
 ## signatureSubscribe
 
 Subscribe to a transaction signature to receive notification when a given transaction is committed. On `signatureNotification` - the subscription is automatically cancelled.
+The signature must be a [txid](/terminology#transaction-id), the first signature of a transaction.
 
 <DocSideBySide>
 <CodeParams>