When adjusting the notes options for printing checks the option to "Print the Customer Number" drop down is greyed out in the Notes section of the Default Payment Options for Accounts Payable Computer Check
When in Accounts Payable module > Banks > Edit Account details > Payments tab. Click on the Edit Payment Options button, then select Notes and the "Customer Number" drop down menu next to the "Print the:" radio button is greyed out even though the radio button is on.
1. Uncheck and recheck the "Print Note on Check" checkbox
2. Click and unclick the "Print this note:" radio button and the previously greyed out drop down menu will now be available to click.