To define the auto-generated ID patterns of the transactions:


1. From the top menu bar click Settings. 


2. Select Setup/Configuration 


3. In the Document Numbers section, enter the desired Prefix, Next Number and Suffix for Sales Invoice and Sales Invoice Payment.



Prefix: The prefix part of the next transaction ID number

Next No.: The serial number (to be used between the prefix and suffix) for the next transaction ID number.

Suffix: The suffix part of the next transaction ID number