diff --git a/src/TObj/TObj.msg b/src/TObj/TObj.msg
index c59637312f..dce25e9a12 100755
--- a/src/TObj/TObj.msg
+++ b/src/TObj/TObj.msg
@@ -3,50 +3,6 @@
 !                 where NameOfClass is optional or abbreviated
 !!!!!!!!!! --------------------------------------------------- !!!!!!!!!
 
-.TObj_DL_VoidItemId
-  Void ID attribute in XML file when loading the library %s
-
-.TObj_DL_ZeroId
-  Non-positive or irrelevant (%d) ID attribute in XML file when loading the library %s
-
-.TObj_DL_MissItemData
-  Missing LibraryData element with ID %d in XML file when loading the library %s
-
-.TObj_DL_NoLibName
-  Cannot find the library "%s" with the type "%s"
-
-.TObj_DL_TraceReadLib
-  Loading the library %s / %s, version %s, date %s
-
-.TObj_DL_NoDocument
-  The document %s does not contain data libraries
-
-.TObj_DL_AlrReadLib
-  The library "%s" for data type "%s" has already been loaded
-
-.TObj_DL_AlrAddedReader
-  TObj_DataLibrary::AddReader: Warning: this Reader already added to a different DataLibrary
-
-.TObj_DL_InvalidLibHeader
-  Invalid library header encountered in file %s
-
-.TObj_DL_NotSupported
-  The data type "%s" not supported
-
-.TObj_DL_EmptyDL
-  DataLibrary is empty, the file is not created
-
-.TObj_DL_CannotCreateFile
-  Can't create the file for data library
-
-.TObj_DL_ErrorClosingFile
-  Error closing the file for data library
-
-.TObj_DL_DoubledTag
-  Duplicate tag %d found for element "%s" in library "%s", type "%s"
-
-!!! ---------------- TObj_Application ----------------
-
 .TObj_Appl_SDriverFailure
   Error saving document %s : driver failure. Check presence of resource files.
 
@@ -119,76 +75,11 @@
 .TObj_Appl_Exception
   An exception was caught: %s
 
-!!! ---------------- TObj_Checker ----------------
-
-.TObj_Ch_RefToNullObj
-  Referencing to NULL object: %s
-
-.TObj_Ch_BackRefToNullObj
-  Back Referencing to NULL object: %s
-
-.TObj_Ch_BackRefToDelObj
-  Back Referencing to deleted object: %s
-
-.TObj_Ch_BackRefError
-  Back Reference Error: %s
-
-.TObj_Ch_RefWithoutBack
-  Reference without back one: %s
-
-.TObj_Ch_BackRefWithoutDirect
-  Back Reference without direct one: %s from: %s
-
-.TObj_Ch_NoAttr
-  Has no attribute %s at label
-
-.TObj_Ch_NotOcafObj
-  Object is not OCAF Object: %s
-
-.TObj_Ch_ObjWithoutName
-  Object without name: %s entry %s
-
-.TObj_Ch_NameNotUnique
-  Name: %s is not unique in the model %s
-
-.TObj_Ch_NameNotRegistered
-  Name: %s is not registered in names map %s
-
-.TObj_Ch_RegistrationError
-  Registration Error: name %s, target entry %s, entry %s
-
-.TObj_Ch_ExtraName
-  Map of model contains the extra name : %s
-
 .TObj_M_LoadDocument
   +++++ Load document %s
 
-.TObj_M_SaveDocument
-  +++++ Save document %s
-
-.TObj_M_TimeLoading
-  +++++ Fin loading                : 
-
-.TObj_M_TimeInit
-  +++++ Fin initializing new model : 
-
-.TObj_M_TimeSaving
-  +++++ Fin saving : 
-
 .TObj_M_WrongFile
   File %s has wrong content
 
 .TObj_M_NoWriteAccess
   Cannot write the file %s, check permissions
-
-.TObj_Any_FailCreateDir
-  Error creating the directory %s
-
-.TObj_Any_NoFormatVersion
-  File %s has no format version, probably it is obsolete
-
-.TObj_Any_WrongFormatVersion
-  File %s has unsupported format version; model is discarded
-
-.TObj_Any_OldFormatVersion
-  Warning: Model version is updated; it will not be readable by previous versions of application
diff --git a/src/TObj/TObj_TObj_msg.pxx b/src/TObj/TObj_TObj_msg.pxx
index bdda06ea5c..1d23bff2cb 100644
--- a/src/TObj/TObj_TObj_msg.pxx
+++ b/src/TObj/TObj_TObj_msg.pxx
@@ -6,50 +6,6 @@ static const char TObj_TObj_msg[] =
   "!                 where NameOfClass is optional or abbreviated\n"
   "!!!!!!!!!! --------------------------------------------------- !!!!!!!!!\n"
   "\n"
-  ".TObj_DL_VoidItemId\n"
-  "  Void ID attribute in XML file when loading the library %s\n"
-  "\n"
-  ".TObj_DL_ZeroId\n"
-  "  Non-positive or irrelevant (%d) ID attribute in XML file when loading the library %s\n"
-  "\n"
-  ".TObj_DL_MissItemData\n"
-  "  Missing LibraryData element with ID %d in XML file when loading the library %s\n"
-  "\n"
-  ".TObj_DL_NoLibName\n"
-  "  Cannot find the library \"%s\" with the type \"%s\"\n"
-  "\n"
-  ".TObj_DL_TraceReadLib\n"
-  "  Loading the library %s / %s, version %s, date %s\n"
-  "\n"
-  ".TObj_DL_NoDocument\n"
-  "  The document %s does not contain data libraries\n"
-  "\n"
-  ".TObj_DL_AlrReadLib\n"
-  "  The library \"%s\" for data type \"%s\" has already been loaded\n"
-  "\n"
-  ".TObj_DL_AlrAddedReader\n"
-  "  TObj_DataLibrary::AddReader: Warning: this Reader already added to a different DataLibrary\n"
-  "\n"
-  ".TObj_DL_InvalidLibHeader\n"
-  "  Invalid library header encountered in file %s\n"
-  "\n"
-  ".TObj_DL_NotSupported\n"
-  "  The data type \"%s\" not supported\n"
-  "\n"
-  ".TObj_DL_EmptyDL\n"
-  "  DataLibrary is empty, the file is not created\n"
-  "\n"
-  ".TObj_DL_CannotCreateFile\n"
-  "  Can't create the file for data library\n"
-  "\n"
-  ".TObj_DL_ErrorClosingFile\n"
-  "  Error closing the file for data library\n"
-  "\n"
-  ".TObj_DL_DoubledTag\n"
-  "  Duplicate tag %d found for element \"%s\" in library \"%s\", type \"%s\"\n"
-  "\n"
-  "!!! ---------------- TObj_Application ----------------\n"
-  "\n"
   ".TObj_Appl_SDriverFailure\n"
   "  Error saving document %s : driver failure. Check presence of resource files.\n"
   "\n"
@@ -122,76 +78,11 @@ static const char TObj_TObj_msg[] =
   ".TObj_Appl_Exception\n"
   "  An exception was caught: %s\n"
   "\n"
-  "!!! ---------------- TObj_Checker ----------------\n"
-  "\n"
-  ".TObj_Ch_RefToNullObj\n"
-  "  Referencing to NULL object: %s\n"
-  "\n"
-  ".TObj_Ch_BackRefToNullObj\n"
-  "  Back Referencing to NULL object: %s\n"
-  "\n"
-  ".TObj_Ch_BackRefToDelObj\n"
-  "  Back Referencing to deleted object: %s\n"
-  "\n"
-  ".TObj_Ch_BackRefError\n"
-  "  Back Reference Error: %s\n"
-  "\n"
-  ".TObj_Ch_RefWithoutBack\n"
-  "  Reference without back one: %s\n"
-  "\n"
-  ".TObj_Ch_BackRefWithoutDirect\n"
-  "  Back Reference without direct one: %s from: %s\n"
-  "\n"
-  ".TObj_Ch_NoAttr\n"
-  "  Has no attribute %s at label\n"
-  "\n"
-  ".TObj_Ch_NotOcafObj\n"
-  "  Object is not OCAF Object: %s\n"
-  "\n"
-  ".TObj_Ch_ObjWithoutName\n"
-  "  Object without name: %s entry %s\n"
-  "\n"
-  ".TObj_Ch_NameNotUnique\n"
-  "  Name: %s is not unique in the model %s\n"
-  "\n"
-  ".TObj_Ch_NameNotRegistered\n"
-  "  Name: %s is not registered in names map %s\n"
-  "\n"
-  ".TObj_Ch_RegistrationError\n"
-  "  Registration Error: name %s, target entry %s, entry %s\n"
-  "\n"
-  ".TObj_Ch_ExtraName\n"
-  "  Map of model contains the extra name : %s\n"
-  "\n"
   ".TObj_M_LoadDocument\n"
   "  +++++ Load document %s\n"
   "\n"
-  ".TObj_M_SaveDocument\n"
-  "  +++++ Save document %s\n"
-  "\n"
-  ".TObj_M_TimeLoading\n"
-  "  +++++ Fin loading                : \n"
-  "\n"
-  ".TObj_M_TimeInit\n"
-  "  +++++ Fin initializing new model : \n"
-  "\n"
-  ".TObj_M_TimeSaving\n"
-  "  +++++ Fin saving : \n"
-  "\n"
   ".TObj_M_WrongFile\n"
   "  File %s has wrong content\n"
   "\n"
   ".TObj_M_NoWriteAccess\n"
-  "  Cannot write the file %s, check permissions\n"
-  "\n"
-  ".TObj_Any_FailCreateDir\n"
-  "  Error creating the directory %s\n"
-  "\n"
-  ".TObj_Any_NoFormatVersion\n"
-  "  File %s has no format version, probably it is obsolete\n"
-  "\n"
-  ".TObj_Any_WrongFormatVersion\n"
-  "  File %s has unsupported format version; model is discarded\n"
-  "\n"
-  ".TObj_Any_OldFormatVersion\n"
-  "  Warning: Model version is updated; it will not be readable by previous versions of application\n";
+  "  Cannot write the file %s, check permissions\n";