SPECIAL CHARGES AND TAXES HANDLING IN TT

Hi: our customer needs to have several commission and/or taxes attached to some TELLER.TRANSACTIONS, but they want to waive any of them (T24 waives ALL or none). If the waived value is a tax, it should be waived to the customer , but the bank will be paying, this means instead of debiting the customer accounts (debited for the rest of charges and the transaction), the waived tax has to be debited from PL.
Our solution: Create several LOCAL FIELDS to let the inputter flag which individual COMM/TAG will be waived and let T24 calculate each comm/tax amount. Create a VERSION ROUTINE to update the TT set of CHARGE FIELDS(32-39) to only include those that are not waived, BUT IT DOES NOT WORK...T24 will charge the customer ALL the comm/tax values. The routine was included either as validation, input, before auth or auth with the same results. The accounting part would be solved using EB.ACCOUNTING in an auth routine, but first we should only charge the non waived commissions/taxes.

Thanks for any help. Regards
JCOSTA

Thanks Andreas for your reply. I tried and didn´t work, after calling the TT.PERFORM.DEF.PROCESSING all 32-39 fields showed the original information, meaning the information BEFORE the change made by the INPUT routine. BTW, in TT.COMMON I didn't have the variable TT$CROSS.VAL.FLAG, but I included it, however the result was the same with or without the variable. To be in the same page, we are in R09.

Meanwhile, it is always good a workaround, but I don't like this workaround:
Change WAIVE.CHARGES core TT field to YES (T24 won´t charge any commision or tax) and using an AUTH.ROUTINE do the accounting of COMMISSIONS and TAXES calculated in LOCAL.FIELDS.

Hope we can find a better alternative.

Kind Regards,
JCOSTA

THANK YOU VERY MUCH!! Your solution works PERFECT!!

Hello : Does this same solution work for FT?? What if I need to ask T24 in a routine to do the related COMM and TAX calculations? Thanks for your Help.