diff --git a/src/main/kotlin/org/opensearch/commons/alerting/model/ClusterMetricsInput.kt b/src/main/kotlin/org/opensearch/commons/alerting/model/ClusterMetricsInput.kt
index d4b39657..a90958a0 100644
--- a/src/main/kotlin/org/opensearch/commons/alerting/model/ClusterMetricsInput.kt
+++ b/src/main/kotlin/org/opensearch/commons/alerting/model/ClusterMetricsInput.kt
@@ -33,7 +33,7 @@ data class ClusterMetricsInput(
     // Verify parameters are valid during creation
     init {
         require(validateFields()) {
-            "The uri.api_type field, uri.path field, or uri.uri field must be defined."
+            "The uri.path field, or uri.url field must be defined."
         }
 
         // Create an UrlValidator that only accepts "http" and "https" as valid scheme and allows local URLs.
diff --git a/src/test/kotlin/org/opensearch/commons/alerting/model/ClusterMetricsInputTests.kt b/src/test/kotlin/org/opensearch/commons/alerting/model/ClusterMetricsInputTests.kt
index 6d1c1055..9c7b491c 100644
--- a/src/test/kotlin/org/opensearch/commons/alerting/model/ClusterMetricsInputTests.kt
+++ b/src/test/kotlin/org/opensearch/commons/alerting/model/ClusterMetricsInputTests.kt
@@ -159,7 +159,7 @@ class ClusterMetricsInputTests {
         url = ""
 
         // WHEN + THEN
-        assertFailsWith<IllegalArgumentException>("The uri.api_type field, uri.path field, or uri.uri field must be defined.") {
+        assertFailsWith<IllegalArgumentException>("The uri.path field, or uri.url field must be defined.") {
             ClusterMetricsInput(path, pathParams, url)
         }
     }
@@ -172,7 +172,7 @@ class ClusterMetricsInputTests {
         url = ""
 
         // WHEN + THEN
-        assertFailsWith<IllegalArgumentException>("The uri.api_type field, uri.path field, or uri.uri field must be defined.") {
+        assertFailsWith<IllegalArgumentException>("The uri.path field, or uri.url field must be defined.") {
             ClusterMetricsInput(path, pathParams, url)
         }
     }