‹ Ad-hoc Volume 5 Ancillary AU_18 December 2018 Amendments to Payment Service Provider (PSP) requirements under Module AU Volume 5_12 December 2018 › Amendments in Authorization Module (AU) of Ancillary Service Providers_18 December 2018 Click here to download the Letter in PDF format. ‹ Ad-hoc Volume 5 Ancillary AU_18 December 2018 Amendments to Payment Service Provider (PSP) requirements under Module AU Volume 5_12 December 2018 ›