diff --git a/cameleer3-server-core/src/main/java/com/cameleer3/server/core/search/SearchRequest.java b/cameleer3-server-core/src/main/java/com/cameleer3/server/core/search/SearchRequest.java
index 78911ecb..1c9a9351 100644
--- a/cameleer3-server-core/src/main/java/com/cameleer3/server/core/search/SearchRequest.java
+++ b/cameleer3-server-core/src/main/java/com/cameleer3/server/core/search/SearchRequest.java
@@ -55,16 +55,8 @@ public record SearchRequest(
     private static final int MAX_LIMIT = 500;
 
     private static final java.util.Set<String> ALLOWED_SORT_FIELDS = java.util.Set.of(
-            "startTime", "status", "agentId", "routeId", "correlationId", "durationMs"
-    );
-
-    private static final java.util.Map<String, String> SORT_FIELD_TO_COLUMN = java.util.Map.of(
-            "startTime", "start_time",
-            "status", "status",
-            "agentId", "agent_id",
-            "routeId", "route_id",
-            "correlationId", "correlation_id",
-            "durationMs", "duration_ms"
+            "startTime", "status", "agentId", "routeId", "correlationId",
+            "durationMs", "executionId", "applicationName"
     );
 
     public SearchRequest {
@@ -75,9 +67,12 @@ public record SearchRequest(
         if (!"asc".equalsIgnoreCase(sortDir)) sortDir = "desc";
     }
 
-    /** Returns the validated database column name for ORDER BY. */
+    /**
+     * Returns the validated sort field name for OpenSearch ORDER BY.
+     * Field names match the ExecutionDocument record fields (camelCase).
+     */
     public String sortColumn() {
-        return SORT_FIELD_TO_COLUMN.getOrDefault(sortField, "start_time");
+        return sortField;
     }
 
     /** Create a copy with resolved agentIds (from application name lookup). */