Can you file form 1099-R when box 7 reads B2... tax software wont accept this for some reason

"B2" or "2B" means you have more than one 1099-R distribution code. Enter each code separately.

1. Put the first code "2" in Box 7 - Distribution code
2. Check the box "I have more than one value in Box 7"
3. You will see a new box. Put "B" in that box