ATIONET Integration Help Center Authorization API Native Transaction Protocol API Native Transaction Protocol API Specifications Native Transaction Protocol API messages Fleet Mobile Payment (NEW !) Fleet Mobile Payment APIs Specifications FMS API (NEW !) FMS API Specifications Wallet API (NEW !) Wallet API Specifications Interface API Interface API Specifications Consumer Card - Native Protocol Consumer Card - Native Protocol Entities API Entities API description Loyalty API Native Loyalty Protocol API description Device Updater API Device Updater API description Consumer Card API Consumer Card API description Tracking API Tracking Interface API Protocol Specification Fiscal API Fiscal API description .NET SDK .NET SDK Reference