01Methodology
All case studies below are anonymised — the clients listed in the TrustMarquee logo wall (Atlantic, Spar, Konzum, Plodine, Tommy, Studenac, Maistra, Končar, BSH, A1, AUDI, BMW, Alcatel, Franck, Akton, Znanje) are not explicitly tied to specific figures in the text, as contract details and internal processes fall under NDA.
The figures we quote (implementation time, touchless processing rate, administrative time reduction, ROI period) are aggregated averages across 5-15 projects per sector over the last 10 years. Variability is ± 15-20 % depending on the client's starting maturity and the integration scope.
02CS-01 — FMCG retail, regional chain
Large regional FMCG chain (300+ stores, 50+ suppliers) with full-EDI integration through the REDOK platform and a Web EDI portal for long-tail suppliers.
What we delivered
ORDERS, ORDRSP, DESADV, INVOIC, RECADV over Peppol AS4 for 18 strategic suppliers; Web EDI portal for 280 transactional and spot suppliers. Master data sync with the ERP every 4 hours.
Measured outcome
Touchless processing 96 % after 9 months. Procurement admin time -68 %. Disputes -58 %. Project ROI: 11 months from go-live.
03CS-02 — Automotive, component supplier
Croatian automotive component supplier (350 employees, 4 OEM customers in the DACH region) — JIT/JIS delivery, mandatory ASN, VDA and Odette standards.
What we delivered
Direct integration with 4 OEM EDI systems (VDA 4905, VDA 4913, Odette ASN); production sync with JIS pulls at 15-minute intervals. AS2 and AS4 access to OEMs.
Measured outcome
Zero JIT/JIS penalties over 18 months (previously ~12 incidents/year). ASN preparation time -82 %. OEM escalation line triggered 3× in 2 years, all resolved within SLA.
04CS-03 — Pharmaceutical distribution
Croatian pharmaceutical distributor (pharmacies, hospitals, wholesale) with regulatory requirements for serialisation, EMVO/HALMED reporting and SDD (Safety Data Document) exchange.
What we delivered
Integration with EMVO/HALMED services for serialisation (Falsified Medicines Directive); EDI exchange with 1,200+ pharmacies via combined full-EDI (200) and Web EDI portal (1,000+); GDP-compliant archive 11 years.
Measured outcome
100 % serialisation compliance (HALMED audit passed with no findings). New pharmacy onboarding time: 1.5 days (previously 3-4 weeks). Returns due to mislabelled serial numbers reduced by 91 %.
05CS-04 — Telecom, mass billing
Large regional telecom operator (B2C 1M+ customers, B2B 80k+ accounts) with mass billing e-invoicing through REDOK Peppol AP + CIS fiscalisation.
What we delivered
Peak processing 350,000 invoices/day (quarterly B2C billing); Peppol BIS Billing 3.0 for the B2B segment; integration with CIS Fiscalisation 2.0; 11-year archive with eIDAS seal.
Measured outcome
SLA 99.98 % on peak days (3× the contracted target). End-to-end invoice issue time from ERP generation: 4 seconds average. Fiscalisation errors -94 % in the first 6 months.
06CS-05 — Public procurement, EU-funded e-invoicing
Consortium of suppliers on EU-funded projects (construction, IT procurement, consulting) required to issue Peppol BIS e-invoices to public contracting authorities.
What we delivered
REDOK as Peppol AP for issuing BIS Billing 3.0 e-invoices to 70+ public institutions; sandbox for test issuance before go-live; multi-currency support (EUR, GBP, CHF).
Measured outcome
New supplier Peppol onboarding time: 5 business days (certificates included). First-pass invoice approval rate: 97 % (previously 70-80 % with frequent corrections). Paper archive for EU audits eliminated.
07Who should consider REDOK
Pattern across all 5 case studies: REDOK delivers value fastest to companies that already have 5+ key trading partners, issue 1,000+ documents per month and where touchless processing above 90 % is a strategic goal. Smaller companies can always start with our Starter package and Web EDI portal — with no capital outlay and monthly billing.