Seamless Acceptance assessments are aggregated to the eDoc Submitter CRID and displayed on the Mailer Scorecard and Mail Entry Postage Assessment reports. Detailed guidance on reporting functionality and user guides is available in the Guide to Streamlined Mail Acceptance for Letters and Flats Reporting, found here: https://postalpro.usps.gov/MailAcceptanceReportingGuide.
The maximum charge (eDoc Postage + additional postage) for any Seamless Acceptance piece will not exceed the single piece rate for the mail class/processing category.