Technical Reference
Technical description of XPOS ESDC provided as FRCS accreditation evidence. Sections (S1-S17) are cited by the compliance response.
Architecture & Secure Element (S1-S2)
§1 — System architecture & components XPOS ESDC is an application-based E-SDC for Windows 10/11 (...
Authentication & TaxCore (S3-S4)
§3 — Authentication & token acquisition Access to TaxCore.API requires a bearer token obtained by...
Identity, Tax & Invoice Processing (S5-S7)
§5 — Identity from the Secure Element The taxpayer identity is read directly from the SE certific...
Digital Signatures & Verification (S8)
§8 — Digital signature & verification URLEvery invoice type — Normal, Advance, Copy, Training, Pr...
Audit - Format, Remote, Local, Cadence (S9-S12)
§9 — Audit package format & storage Each signed invoice yields an audit package containing the in...
Clock, Logging & Persistence (S13-S15)
§13 — Real-time clock & time synchronisation As a software E-SDC there is no dedicated hardware R...
Error Codes & Security (S16-S17)
§16 — Error codes XPOS ESDC returns only the prescribed FRCS error codes; any manufacturer-specif...