diff --git a/src/main/kotlin/org/opensearch/commons/alerting/action/IndexMonitorRequest.kt b/src/main/kotlin/org/opensearch/commons/alerting/action/IndexMonitorRequest.kt
index 08ddaa3a..cd5e6230 100644
--- a/src/main/kotlin/org/opensearch/commons/alerting/action/IndexMonitorRequest.kt
+++ b/src/main/kotlin/org/opensearch/commons/alerting/action/IndexMonitorRequest.kt
@@ -65,7 +65,12 @@ class IndexMonitorRequest : ActionRequest {
     private fun hasDocLeveMonitorInput() = monitor.inputs.isNotEmpty() && monitor.inputs[0] is DocLevelMonitorInput
 
     private fun isDocLevelMonitor() =
-        monitor.monitorType.isNotBlank() && Monitor.MonitorType.valueOf(this.monitor.monitorType.uppercase(Locale.ROOT)) == Monitor.MonitorType.DOC_LEVEL_MONITOR
+        monitor.monitorType.isNotBlank() && isMonitorOfStandardType(monitor.monitorType) && Monitor.MonitorType.valueOf(this.monitor.monitorType.uppercase(Locale.ROOT)) == Monitor.MonitorType.DOC_LEVEL_MONITOR
+
+    private fun isMonitorOfStandardType(monitorType: String): Boolean {
+        val standardMonitorTypes = Monitor.MonitorType.values().map { it.value.uppercase(Locale.ROOT) }.toSet()
+        return standardMonitorTypes.contains(monitorType.uppercase(Locale.ROOT))
+    }
 
     @Throws(IOException::class)
     override fun writeTo(out: StreamOutput) {
diff --git a/src/test/kotlin/org/opensearch/commons/alerting/action/IndexMonitorRequestTests.kt b/src/test/kotlin/org/opensearch/commons/alerting/action/IndexMonitorRequestTests.kt
index 5caf2f60..f3f54e10 100644
--- a/src/test/kotlin/org/opensearch/commons/alerting/action/IndexMonitorRequestTests.kt
+++ b/src/test/kotlin/org/opensearch/commons/alerting/action/IndexMonitorRequestTests.kt
@@ -161,6 +161,25 @@ class IndexMonitorRequestTests {
         )
     }
 
+    @Test
+    fun `test remote monitor with wildcard index pattern`() {
+        val monitor = randomDocumentLevelMonitor().copy(
+            monitorType = "ti_doc_level_monitor",
+            inputs = listOf(DocLevelMonitorInput(indices = listOf("valid, test*", "test*"), queries = emptyList()))
+        )
+        val req = IndexMonitorRequest(
+            "1234",
+            1L,
+            2L,
+            WriteRequest.RefreshPolicy.IMMEDIATE,
+            RestRequest.Method.POST,
+            monitor
+        )
+
+        val validationException = req.validate()
+        Assertions.assertNull(validationException)
+    }
+
     @Test
     fun `test doc level monitor with regex index pattern`() {
         val monitor = randomDocumentLevelMonitor().copy(