diff --git a/EInAPI.h b/EInAPI.h
index 9e34cbb..a09a8dc 100644
--- a/EInAPI.h
+++ b/EInAPI.h
@@ -522,6 +522,9 @@ EIN_EXPORT int  __stdcall EgtVerifyCutAsSplitting( int nMchId) ;
 
 // Machining
 EIN_EXPORT BOOL __stdcall EgtInitMachMgr( const wchar_t* wsMachinesDir) ;
+// Errors
+EIN_EXPORT int __stdcall EgtGetLastMachMgrErrorId( void) ;
+EIN_EXPORT wchar_t* __stdcall EgtGetLastMachMgrErrorString( void) ;
 // Machines
 EIN_EXPORT BOOL __stdcall EgtSetCurrMachine( const wchar_t* wsMachineName) ;
 EIN_EXPORT BOOL __stdcall EgtGetCurrMachineName( wchar_t*& wsMachineName) ;
diff --git a/EMkMachMgr.h b/EMkMachMgr.h
index b4863b9..9d72d74 100644
--- a/EMkMachMgr.h
+++ b/EMkMachMgr.h
@@ -34,6 +34,8 @@ class __declspec( novtable) IMachMgr
                          int nContextId, const std::string& sLuaLibsDir, const std::string& sLuaLastRequire) = 0 ;
       virtual bool Update( void) = 0 ;
       virtual bool Insert( int nInsGrp) = 0 ;
+      virtual int  GetLastErrorId( void) = 0 ;
+      virtual std::string GetLastErrorString( void) = 0 ;
      // Machines
       virtual bool SetCurrMachine( const std::string& sMachineName) = 0 ;
       virtual bool GetCurrMachineName( std::string& sMachineName) const = 0 ;
diff --git a/EXeExecutor.h b/EXeExecutor.h
index 6170b20..ddc1556 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -568,6 +568,9 @@ EXE_EXPORT int  ExeVerifyCutAsSplitting( int nMchId) ;
 EXE_EXPORT bool ExeInitMachMgr( const std::string& sMachinesDir) ;
 EXE_EXPORT bool ExeUpdateMachMgr( void) ;
 EXE_EXPORT bool ExeInsertMachMgr( int nInsGrp) ;
+// Errors
+EXE_EXPORT int  ExeGetLastMachMgrErrorId( void) ;
+EXE_EXPORT std::string ExeGetLastMachMgrErrorString( void) ;
 // Machines
 EXE_EXPORT bool ExeSetCurrMachine( const std::string& sMachineName) ;
 EXE_EXPORT bool ExeGetCurrMachineName( std::string& sMachineName) ;