MICR String Customization

Hi All-

I would like to check if anybody has modified the MICR string generation Peoplcode to generate the MICR string as per bank requirements. If yes, could you please provide some specifics. I see that MICR string can be generated using different processes such as express payment, payments via paycycle etc. So this means the underlying MICR code behind all these processes must be modified?

Below is a typical MICR string generation Peoplecode.

   APD_MANDFT_SRCH.MICR_LINE = "C" | APD_MANDFT_SRCH.PYMNT_ID_REF | "C A" | APD_MANDFT_SRCH.DFI_ID_NUM | "A " | APD_MANDFT_SRCH.BANK_ACCOUNT_NUM | "C";