Transaction code PC00_M40_SWCH

Hi,

Transaction code PC00_M40_SWCH,which is mainly used for Challan Mapping and other Income tax related activities.

In this transaction code in development 40TX TANK Begin date is 01.01.1800

but in quality 40TX TANK Begin date is 01.04.9999

How can we change this date to 01.01.1800.

Regards,

R Mav.