There are several reasons your bet code conversion might fail. Most commonly, you're trying to convert sports other than football or soccer, which are not fully supported across all bookmakers. In some cases, you may be attempting to convert markets or options that don't exist on both bookies, such as "Corners," "Shots on Target," or special player bets. Other times, the issue could be due to blocked or restricted events on one bookmaker or a temporary network issue while fetching data. If none of these apply, simply retry after a few minutes. And if you still force that code through… well, you'll probably lose that bet.