Hi Satyabrat, It is important to keep in mind that the ^CI command persists label to label. It remembers what it was last set to at any given time. That being said, it should not effect hex encoded barcodes. In fact I tried and could not reproduce the issue. All the barcodes printed the exact same for me. I ran it through a dozen times using #1 approach and #2. Are you sure there is nothing else modifying it? Can you send some example printouts of the good and bad barcodes?