Rounding Off item to be Adjust automatically and Not carryforward into next invoicing

Dear Expert,

Recently i received a requirement from users in which they want to eliminate rounding off item automatically or with offsetting item and this rounding off item should not carryforward into next invoicing.

Suppose in a scenario, if an invoice for the month of September 2014 billed and invoiced with the amount of 1500 ias first item and a round amount .23 in next item of a document. so when next month invoice executes then this second item should not carryforward into inclusion of next invoicing. This item should be eliminate or knocked off with an offsetting entry.

All experts valuable inputs requires to achieve this objective.

Thanks and Regards

Arun