A predefined Chart of Accounts contains four-digit account codes. Assuming that your company uses five-digit Chart of Accounts in this case you can change values by placing the pointer to the appropriate account, for example 1200, placing the pointer at the end of record (by using the key or mouse):

Add a zero at the end of record:

You can update the new code by moving to the next line using the down cursor key or by pressing the key. The program warns you of the change (see Primary key has been changed. Do you really want to continue?)

Then it requests from you to confirm the operation and the following message appears (see Do you really want to change the account code? Old code: xxx New code: YYY)

By clicking the OK button you confirm the operation and you cancel it by clicking the Cancel button.

After confirming the operation every reference referencing the account 1200 is changed across the entire database in the reference referencing a new account code!