I Had that problem a few years ago. To get around it I just spelled out the & to (and)..

Thanks,

Already I did so but it didn't work for short name like A & B, I tried using A and B but it was rejected again.

This was not an issue before, so this one needs to be fixed in the coming update.

As you know we have to keep the Business name exactly the same as it is registered  with the IRS.

Good Afternoon HASSOUN, 

This is not a known issue and likely will not be addressed in the upcoming update. Since this is specific to your situation, I highly recommend that you call our support team at 866-220-0488 so that we can get more details on the rejection and access your data if need be. 

Thank you for your post in the Accountants Community!