Biztalk Error X2044 : symbol Object is already defined; the first definition is in assembly c:\###.dll

Yesterday I was hacing an error  in Biztalk 2010  ,

symbol '###' is already defined; the first definition is in assembly c:\###.dll , in my case it was saing that a porttype is alrdeay defined, so what how to fix these kind of issues in biztalk. error x2044

1. Open the orchestration in Notepad (In my case SchoolOrchestration.odx)


2. find (Ctrl+F) for “#endif // __DESIGNER_DATA”


3. Delete all the code below that line


4. Save your file in Notepad


5. Say yes when Visual Studio asks if you want to update your file


6. Recompile

that's it .

Source : http://biztalkia.blogspot.com/2005/12/solving-biztalk-error-x2044.html