diff --git a/src/Rules.php b/src/Rules.php
index 9be2f19..3958ec6 100644
--- a/src/Rules.php
+++ b/src/Rules.php
@@ -2,14 +2,10 @@
 
 	namespace ReflectRules;
 
-	use \victorwesterlund\xEnum;
-
 	use \ReflectRules\Scope;
 
 	// Supported types for is_type()
 	enum Type {
-		use xEnum;
-		
 		case NULL;
 		case ENUM;
 		case ARRAY;
diff --git a/src/Ruleset.php b/src/Ruleset.php
index 44515c9..054b8cd 100644
--- a/src/Ruleset.php
+++ b/src/Ruleset.php
@@ -13,61 +13,33 @@
 	}
 
 	enum Error {
-		case UNKNOWN_PROPERTY_NAME;
-		case MISSING_REQUIRED_PROPERTY;
-		case INVALID_PROPERTY_TYPE;
 		case VALUE_MIN_ERROR;
 		case VALUE_MAX_ERROR;
+		case INVALID_PROPERTY_TYPE;
+		case INVALID_PROPERTY_VALUE;
+		case MISSING_REQUIRED_PROPERTY;
 	}
 
 	class Ruleset {
 		// Array of arrays with failed constraints
 		private array $errors = [];
 
-		// Aggregated rules for GET and POST
-		private array $rules_get = [];
-		private array $rules_post = [];
-
 		public function __construct() {}
 
-		// Return property names for all Rules in array
-		private static function get_property_names(array $rules): array {
-			return array_map(fn(Rules $rule): string => $rule->get_property_name(), $rules);
-		}
-
-		// ----
-
 		// Append an error to the array of errors
-		private function add_error(Error $error, Scope $scope, string $name, string $message): void {
+		private function add_error(Error $error, Scope $scope, string $property, mixed $expected): void {
 			// Create sub array if this is the first error in this scope
 			if (!array_key_exists($scope->name, $this->errors)) {
 				$this->errors[$scope->name] = [];
 			}
 
 			// Create sub array if this is the first error for this property
-			if (!array_key_exists($name, $this->errors[$scope->name])) {
-				$this->errors[$scope->name][$name] = [];
+			if (!array_key_exists($property, $this->errors[$scope->name])) {
+				$this->errors[$scope->name][$property] = [];
 			}
 
-			$this->errors[$scope->name][$name][] = [
-				"scope"         => $scope->name,
-				"property_name" => $name,
-				"error_code"    => $error->name,
-				"error_message" => $message
-			];
-		}
-
-		private function eval_property_name_diff(array $rules, Scope $scope): void {
-			// Get array keys from superglobal
-			$keys = array_keys($GLOBALS[$scope->value]);
-
-			// Get property names that aren't defiend in the ruleset
-			$invalid_names = array_diff($keys, self::get_property_names($rules));
-
-			// Add error for each invalid property name
-			foreach ($invalid_names as $invalid_name) {
-				$this->add_error(Error::UNKNOWN_PROPERTY_NAME, $scope, $invalid_name, "Unknown property name '{$invalid_name}'");
-			}
+			// Set expected value value for property in scope
+			$this->errors[$scope->name][$property][$error->name] = $expected;
 		}
 
 		// Evaluate Rules against a given value
@@ -82,7 +54,7 @@
 					return;
 				}
 
-				$this->add_error(Error::MISSING_REQUIRED_PROPERTY, $scope, $name, "Value can not be empty");
+				$this->add_error(Error::MISSING_REQUIRED_PROPERTY, $scope, $name, $name);
 			}
 
 			// Get value from scope for the current property
@@ -93,59 +65,48 @@
 				The error messages will be returned 
 			*/
 
+			// Value is not of the correct type or enum value
 			if ($rules->types && !$rules->eval_type($value, $scope)) {
-				// List names of each allowed type
-				$types = implode(" or ", array_map(fn($type): string => $type->name, $rules->types));
+				if (!$rules->enum) {
+					// Get type names from enum
+					$types = array_map(fn(Type $type): string => $type->name, $rules->types);
 
-				// List allowed enum values
-				if ($rules->enum) {
-					$values = implode(" or ", array_map(fn($value): string => "'{$value}'", $rules->enum));
-					$this->add_error(Error::INVALID_PROPERTY_TYPE, $scope, $name, "Value must be exactly: {$values}");
+					$this->add_error(Error::INVALID_PROPERTY_TYPE, $scope, $name, $types);
+				} else {
+					$this->add_error(Error::INVALID_PROPERTY_VALUE, $scope, $name, $rules->enum);
 				}
-
-				$this->add_error(Error::INVALID_PROPERTY_TYPE, $scope, $name, "Value must be of type {$types}");
 			}
 
 			if ($rules->min && !$rules->eval_min($value, $scope)) {
-				$this->add_error(Error::VALUE_MIN_ERROR, $scope, $name, "Value must be larger or equal to {$rules->min}");
+				$this->add_error(Error::VALUE_MIN_ERROR, $scope, $name, $rules->min);
 			}
 
 			if ($rules->max && !$rules->eval_max($value, $scope)) {
-				$this->add_error(Error::VALUE_MAX_ERROR, $scope, $name, "Value must be smaller or equal to {$rules->max}");
+				$this->add_error(Error::VALUE_MAX_ERROR, $scope, $name, $rules->max);
 			}
 		}
 
-		// Evaluate all Rules in this Ruleset against values in scope and return true if no errors were found
-		private function eval_all_rules(array $rules, Scope $scope): bool {
-			foreach ($rules as $rule) {
-				$this->eval_rules($rule, $scope);
-			}
-
-			return empty($this->errors);
-		}
-
 		// ----
 
 		// Perform request processing on GET properties (search parameters)
 		public function GET(array $rules): void {
-			array_merge($this->rules_get, $rules);
+			foreach ($rules as $rule) {
+				$this->eval_rules($rule, Scope::GET);
+			}
 		}
 
 		// Perform request processing on POST properties (request body)
 		public function POST(array $rules): void {
-			array_merge($this->rules_post, $rules);
+			foreach ($rules as $rule) {
+				$this->eval_rules($rule, Scope::POST);
+			}
 		}
 
-		// Evaluate all aggrgated rules
-		public function eval(): true|array {
-			$this->eval_property_name_diff($this->rules_get, Scope::GET);
-			$this->eval_property_name_diff($this->rules_post, Scope::POST);
+		public function is_valid(): bool {
+			return empty($this->errors);
+		}
 
-			$is_valid_get = $this->eval_all_rules($this->rules_get, Scope::GET);
-			$is_valid_post = $this->eval_all_rules($this->rules_post, Scope::POST);
-
-			$is_valid = $is_valid_get && $is_valid_post;
-
-			return $is_valid ? true : $this->errors;
+		public function get_errors(): array {
+			return $this->errors;
 		}
 	}
\ No newline at end of file