How can I get and change the values of Withholding tax grid in MIRO trx

Hi everyone,

I have a requirement where I need to get and change WT_WITHCD field in MIRO's Withholding tax grid. Is there a function module / Badi to do this? I used MRM_HEADER_CHECK, but the parameters related with this badi doesn't have this value.

Do you have any idea?

Thanks in advance!

Regards.

Leo.