Accounts can be found by the Alternate Account Numbers.
Note: This is a Version 10 Feature. For information on obtaining Version 10 or any other optional Module, please contact the Sales Department.
From the Find Form
On the bottom of the stack of find options, you will see Alternate Acct Number. Choose that option to find by Alternate Account Number.
This find list will contain a combination of all three Alternate Account Numbers to allow you to search all three fields at once.