Customers with BT Sport on Sky channels or Sky Sports Main Event may notice a number appearing at the top right-hand side of their screen,
- For BT Sport on Sky customers this is a nine-digit number
- For Sky Sports Main Event this could be a small code such as "MHKXaMSdSH" or a code that's 23 characters long
These are all just 'Validation Codes' to check you're receiving the correct channel. You don't need to do anything. The times this will appear on-screen will vary across different programmes and channels.