The RL-24 has a 6 digit registration number but Turbo Tax doesn't recognize it and is blocking me with this error.

Same error here, I even called my childcare providers and nothing has changed on their end. I've never had this problem in the past. No problem filing the Federal return but it won't let me netfile the Quebec return.

I also have the exact same issue and it prevents me from file my Quebec taxes. 

Thanks your solution works

I tried the three zeros in fronto of the 6 numbers but it is not working for me. I get an error message asking to not use my own NAS.... 

@ir78 Please try adding another zero so that you have 10 digits ex: 0000xxxxxx

If you are still not able to resolve this issue, please contact our phone support team at 1-888-829-8608.

Still happening in 2023... Please fix. Thanks!

@nl00 For SIN or identification numbers that have 6 or 8 digits only, simply put zeros in the front so that the total number of characters is 10 digits long in the RL-24 Box H. 

If you are still not able to resolve this issue, please contact our phone support team at 1-888-829-8608.