Japanese business and individual

Hi everyone
I'm working for a money transfer firm and would like to send some fund to Japan but having an issue trying to differentiate if the receiver is a Japanese business or individual.
Does any know if is there any difference in the length of account number between a business bank account and individual bank account?
Many thanks for your help

Bank accounts in Japan are seven digits. (Branch codes are usually three digits.)

My personal and business accounts, and the people I regularly pay (individual and business) all have the same format.

I have encountered an eight digit account number once (and only once) and I am not sure how that company got that account in the first place. They told me it was specific for international payments and not their usual account. They eventually supplied the correct seven digit account number and my transfer worked fine.