diff --git a/specification/keyvault/data-plane/Microsoft.KeyVault/preview/7.3-preview/keys.json b/specification/keyvault/data-plane/Microsoft.KeyVault/preview/7.3-preview/keys.json
index 683e717b54db..7772fd7d460e 100644
--- a/specification/keyvault/data-plane/Microsoft.KeyVault/preview/7.3-preview/keys.json
+++ b/specification/keyvault/data-plane/Microsoft.KeyVault/preview/7.3-preview/keys.json
@@ -2232,11 +2232,11 @@
       "properties": {
         "timeAfterCreate": {
           "type": "string",
-          "description": "Time after creation to attempt rotate. It will be in ISO 8601 format. Example: 90 days : \"P90D\" "
+          "description": "Time after creation to attempt to rotate. It only applies to rotate. It will be in ISO 8601 duration format. Example: 90 days : \"P90D\" "
         },
         "timeBeforeExpiry": {
           "type": "string",
-          "description": "Time before expiry to attempt rotate. It will be in ISO 8601 format. Example: 90 days : \"P90D\""
+          "description": "Time before expiry to attempt to rotate or notify. It will be in ISO 8601 duration format. Example: 90 days : \"P90D\""
         }
       },
       "description": "A condition to be satisfied for an action to be executed."
diff --git a/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2021-06-01-preview/keys.json b/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2021-06-01-preview/keys.json
index 2f89167ed638..9a29fc8034d6 100644
--- a/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2021-06-01-preview/keys.json
+++ b/specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2021-06-01-preview/keys.json
@@ -589,11 +589,11 @@
       "properties": {
         "timeAfterCreate": {
           "type": "string",
-          "description": "The time duration after key creation to rotate the key. It should be in ISO8601 format. Eg: 'P90D', 'P1Y'."
+          "description": "The time duration after key creation to rotate the key. It only applies to rotate. It will be in ISO 8601 duration format. Eg: 'P90D', 'P1Y'."
         },
         "timeBeforeExpiry": {
           "type": "string",
-          "description": "The time duration before key expiring to rotate the key. It should be in ISO8601 format. Eg: 'P90D', 'P1Y'."
+          "description": "The time duration before key expiring to rotate or notify. It will be in ISO 8601 duration format. Eg: 'P90D', 'P1Y'."
         }
       },
       "type": "object"