diff --git a/src/Executors/EcsWhereExecutor.cs b/src/Executors/EcsWhereExecutor.cs
index 47d43ab..a2d89ce 100644
--- a/src/Executors/EcsWhereExecutor.cs
+++ b/src/Executors/EcsWhereExecutor.cs
@@ -1,4 +1,5 @@
-using System.Runtime.CompilerServices;
+using DCFApixels.DragonECS.Internal;
+using System.Runtime.CompilerServices;
 
 namespace DCFApixels.DragonECS
 {
@@ -52,8 +53,8 @@ namespace DCFApixels.DragonECS
         {
 #if (DEBUG && !DISABLE_DEBUG) || ENABLE_DRAGONECS_ASSERT_CHEKS
             //_executeMarker.Begin();
-            if (span.IsNull) throw new System.ArgumentNullException();//TODO составить текст исключения. 
-            if (span.WorldID != WorldID) throw new System.ArgumentException();//TODO составить текст исключения. 
+            if (span.IsNull) { Throw.ArgumentNull(nameof(span)); }
+            if (span.WorldID != WorldID) { Throw.Quiery_ArgumentDifferentWorldsException(); }
 #endif
             EcsSpan result;
             if (_lastWorldVersion != World.Version)
diff --git a/src/Executors/EcsWhereToGroupExecutor.cs b/src/Executors/EcsWhereToGroupExecutor.cs
index f275cfe..e9e280c 100644
--- a/src/Executors/EcsWhereToGroupExecutor.cs
+++ b/src/Executors/EcsWhereToGroupExecutor.cs
@@ -1,4 +1,5 @@
-using System.Runtime.CompilerServices;
+using DCFApixels.DragonECS.Internal;
+using System.Runtime.CompilerServices;
 
 namespace DCFApixels.DragonECS
 {
@@ -54,8 +55,8 @@ namespace DCFApixels.DragonECS
         {
 #if (DEBUG && !DISABLE_DEBUG) || ENABLE_DRAGONECS_ASSERT_CHEKS
             _executeMarker.Begin();
-            if (span.IsNull) throw new System.ArgumentNullException();//TODO составить текст исключения. 
-            if (span.WorldID != WorldID) throw new System.ArgumentException();//TODO составить текст исключения. 
+            if (span.IsNull) { Throw.ArgumentNull(nameof(span)); }
+            if (span.WorldID != WorldID) { Throw.Quiery_ArgumentDifferentWorldsException(); }
 #endif
             if (_lastWorldVersion != World.Version)
             {
diff --git a/src/Utils/Exceptions.cs b/src/Utils/Exceptions.cs
index 15c1d04..4530c56 100644
--- a/src/Utils/Exceptions.cs
+++ b/src/Utils/Exceptions.cs
@@ -113,9 +113,19 @@ namespace DCFApixels.DragonECS.Internal
         internal static void Ent_ThrowIsNotAlive(entlong entity)
         {
             if (entity.IsNull)
+            {
                 throw new EcsFrameworkException($"The {entity} is null.");
+            }
             else
+            {
                 throw new EcsFrameworkException($"The {entity} is not alive.");
+            }
+        }
+
+        [MethodImpl(MethodImplOptions.NoInlining)]
+        internal static void Quiery_ArgumentDifferentWorldsException()
+        {
+            throw new ArgumentException("The groups belong to different worlds.");
         }
 
 
@@ -125,6 +135,11 @@ namespace DCFApixels.DragonECS.Internal
             throw new ArgumentNullException();
         }
         [MethodImpl(MethodImplOptions.NoInlining)]
+        internal static void ArgumentNull(string paramName)
+        {
+            throw new ArgumentNullException(paramName);
+        }
+        [MethodImpl(MethodImplOptions.NoInlining)]
         internal static void ArgumentOutOfRange()
         {
             throw new ArgumentOutOfRangeException($"index is less than 0 or is equal to or greater than Count.");