11. Account Number    Enter the 10-digit FAS account number(s) and the sum of their dollar amounts that will be charged. 
Note:   The A FAS 10-digit account number can only be recorded once in this section, regardless of the number of pages or the number of receipts. Therefore, if an account number is used more than once, on any page:

a. Identify the duplicated account numbers. 
b. Combine the dollar amounts associated with these account numbers. 
c. Then enter their combined sums into Field 12.