Is there anything wrong with referencing a credit score in a commercial loan write up? I know in consumer lending we have the disclosure signed and if it is for risk based pricing we would need that notice but this is just for general underwriting purposes for all commercial loan applicants with both good and bad credit.

If the factors of the credit score played a part in the credit decision for the business purpose credit I personally see nothing wrong mentioning those reasons in the write up, providing of course the individual who's score you are referring to was to be personally liable on the business debt. If they were not then their individual credit score should not play a factor in the credit decision, in fact you have no permissible purpose to have their credit score/report if they were not to be personally liable on the debt.