Calculation of Withholding Income Tax in case of Advance payment to Vendor/supplier -LN FP5

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Please let us know what are the steps involved in calculation of withholding income tax in case of making advance payment to supplier/vendor in ERP LN FP5.

Even though we have done some testing. But it is found that system is not showing any tax code with category = Withholding income tax in session "Bank Transactions - tfcmg2100s000" and "Payment Advice-tfcmg1501m000" . Due to this, we are unable to deduct withholding tax while making advance payment.

Please help as earliest.

Thanks and Regards.