You can import NACHA-formatted files in ACH Payments or ACH Collections, and Payroll payments, but those files may only contain one batch each. In addition, those payments can only support PPD and CCD Standard Entry Class (SEC) codes. The ACH PassThru feature allows you to create files with multiple batches and with other SEC codes. In addition, unlike other ACH payments, the ACH PassThru feature performs minimal validations before passing the file to us.