diff --git a/CMS_CORE_Library/Siemens/Nc_Siemens.cs b/CMS_CORE_Library/Siemens/Nc_Siemens.cs
index a4a7791..3978521 100644
--- a/CMS_CORE_Library/Siemens/Nc_Siemens.cs
+++ b/CMS_CORE_Library/Siemens/Nc_Siemens.cs
@@ -4460,6 +4460,8 @@ namespace CMS_CORE_Library.Siemens
 
         public override CmsError TOOLS_WLoadToolInMagazine(int magazineId, NewToolInMagazineModel newMagazineTool, ref MountedToolModel newMountedTool)
         {
+            int ackValue = -1;
+            ReadOkActionValue(out ackValue);
             // Check if magazine is occupied
             if (MagazineAction.Action != MAGAZINE_ACTIONS.READY)
                 return MAGAZINE_BUSY_ERROR;
@@ -4631,6 +4633,10 @@ namespace CMS_CORE_Library.Siemens
             if (cmsError.IsError())
                 return cmsError;
 
+            cmsError = CheckDimensionConsistency(ackValue);
+            if (cmsError.IsError())
+                return cmsError;
+
             // Mount temporarily till the Siemens notification arrives
             MoveToolInMagazineList(newMagazineTool.ToolId, magazineId, newMagazineTool.PositionId);
 
@@ -4646,6 +4652,8 @@ namespace CMS_CORE_Library.Siemens
             return NO_ERROR;
         }
 
+        #region CONSISTENCY CHECKS
+
         private CmsError CheckToolTableConsistency()
         {
             Thread.Sleep(100);
@@ -4670,6 +4678,63 @@ namespace CMS_CORE_Library.Siemens
             return NO_ERROR;
         }
 
+        private CmsError ReadOkActionValue(out int value)
+        {
+            value = -1;
+            try
+            {
+                DataSvc dataSvc = new DataSvc();
+                //Read Machine status
+                Item itemToRead = new Item("/Channel/State/aTcAckC[u1, 1]");
+                dataSvc.Read(itemToRead);
+                value = Convert.ToInt32(itemToRead.Value);
+            }
+            catch (Exception ex)
+            {
+                return ManageException(ex);
+            }
+            if(value == -1)
+            {
+                return SIEMENS_TOOL_TABLE_ERROR;
+            }
+            return NO_ERROR;
+        }
+
+        private CmsError CheckDimensionConsistency(int oldValue )
+        {
+            bool check = true;
+            int attempt = 0;
+            int actualValue = -1;
+            try
+            {
+                while (check)
+                {
+                    ReadOkActionValue(out actualValue);
+                    if(actualValue > oldValue)
+                    {
+                        return NO_ERROR;
+                    }
+                    else
+                    {
+                        Thread.Sleep(500);
+                        if (attempt == 9)
+                        {
+                            check = false;
+                        }
+                        attempt++;
+                    }
+
+                }
+            }
+            catch(Exception ex)
+            {
+                return ManageException(ex);
+            }
+            return SIEMENS_TOOL_TABLE_ERROR;
+        }
+
+        #endregion
+
         public override CmsError TOOLS_WUnloadToolFromMagazine(int magazineId, int positionId)
         {
             if (MagazineAction.Action != MAGAZINE_ACTIONS.READY)