diff --git a/src/Config/UtilsConfig.php b/src/Config/UtilsConfig.php
index db83234..01ec4e5 100644
--- a/src/Config/UtilsConfig.php
+++ b/src/Config/UtilsConfig.php
@@ -136,17 +136,6 @@ class UtilsConfig
 	public const INTEGRATION_TYPE_COMPLEX = 'complex';
 
 
-	// ------------------------------------------------------------------
-	// VALIDATIOR
-	// ------------------------------------------------------------------
-
-	/**
-	 * API validator output key.
-	 *
-	 * @var string
-	 */
-	public const VALIDATOR_OUTPUT_KEY = 'validation';
-
 	// ------------------------------------------------------------------
 	// FILE UPLOAD
 	// ------------------------------------------------------------------
@@ -445,6 +434,20 @@ class UtilsConfig
 	 */
 	public const ROUTE_VERSION = 'v1';
 
+	/**
+	 * Route output validator key.
+	 *
+	 * @var string
+	 */
+	public const ROUTE_OUTPUT_VALIDATION_KEY = 'validation';
+
+	/**
+	 * Route output add-on data key.
+	 *
+	 * @var string
+	 */
+	public const ROUTE_OUTPUT_ADDON_DATA_KEY = 'addon';
+
 	// ------------------------------------------------------------------
 	// CAPS
 	// ------------------------------------------------------------------
diff --git a/src/Helpers/UtilsApiHelper.php b/src/Helpers/UtilsApiHelper.php
index 013d3f7..d13c0d8 100644
--- a/src/Helpers/UtilsApiHelper.php
+++ b/src/Helpers/UtilsApiHelper.php
@@ -153,7 +153,7 @@ public static function getIntegrationApiOutput(array $details, string $msg, arra
 		$additionalOutput = [];
 
 		$additional = [
-			UtilsConfig::VALIDATOR_OUTPUT_KEY,
+			UtilsConfig::ROUTE_OUTPUT_VALIDATION_KEY,
 			...$additional,
 		];