Workflow for shipment txn VT01N

[ENRIQUE NUNEZ A]

 Hi everybody,
i'm working with a custom  Workflow for transportation txn VT01N.
   My requirement is to create a custom workflow when txn saved and field VTTK-DATEN <>  space.
  i saw the bo VTTK but i dont have event to trigger workflow i try to do this with change documents but i can't found this   any ideas is apreciated
 Best regards
 Enrique



  
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