ACH CTX PMW

Hi All,

I would appreciate if some one can give me their experience on ACH CTX to Wells Fargo... We are Payment Medium WorkBench

Does the bank accepts the SAP Provided USA ACH CTX Format...

If we need to make any changes to the file -1) Do we have to enhance the strcture and copy the fm's FI_PAYMEDIUM_ACH_30 into zFI_PAYMEDIUM_ACH_30 and implement them ..

What's the structure do we have to enance ?

or else do we have to create new Payment Medium Formats under PAYM Tree in T-code DMEE ?

Can anyone send me end to end process document or links...

I enhanced one at one client but that was long time agao.. I would appreciate if some one could give some documentation like end to end process

Thanks