Verifone vx610 decline code 248

This is tricky to answer... different processing service use different codes. If the software you are running is built on a St. Pete's platform, this code means that the transaction you were processing was a 'reversal' (void) and the amount entered didn't match the original.

If you were running a sale and received this code and the display or receipt actually printed "declined" - it is a valid response indicating the customer card was declined and the code tells the service rep at your processing center why it was turned down (over limit, high risk, frozen account, etc...). If the response did show the word "declined", you can call your customer service department for your processor and they should be able to tell you what the code means in their system. If they don't - change processors as this is a standard service.