I'm trying to customize our new NACHA file template. I need to add a leading space for the Immediate Origin field and allow letters in Company ID field on the Company Bank Details record. Is there a way for me to get the Freemarker file for the native payment file template for CCD/PPD? I'm not an expert on Freemarker so it will be very helpful if I have the one for the native NACHA file and just edit it instead of creating it from scratch.