ASiS ERP and e-Invoicing 2026: Semantic validation, tax authority integration and -90% rejection rate
ASiS validates e-Invoices via native XSD — yet 8-15% of invoices are rejected by the tax authority due to semantic edge cases. Learn how to reduce rejections with pre-submission CIUS-RO validation.
Bogdan Minoiu — Founder Azuvio · 2026-09-22 · 9 min · Compliance & Fiscalitate
Context: Mandatory B2B e-Invoicing from 2024, B2C from 2025
Since July 1st, 2024, e-invoicing is mandatory for B2B transactions (all invoices via the ANAF SPV — the Romanian tax authority), and starting January 1st, 2025, it is also mandatory for B2C. ASiS features a native e-invoice module that generates XML UBL 2.1 files compliant with CIUS-RO and transmits them to the portal.
Native ASiS e-Invoicing capabilities
1. Generates XML UBL 2.1 from the ASiS invoice data
2. XSD Validation (XML structure check)
3. Electronic signature (if a certificate is present)
4. Transmission to the tax authority via API
5. Response reception (accepted/rejected) and logging
The Problem: XSD validation ≠ semantic validation
XSD checks the structure (required fields present, correct formats), but it does not verify CIUS-RO semantics (specific business rules from the tax authority):
Missing or invalid CPV codes for services
Cash accounting VAT flags for eligible customers (VAT at collection regime)
Non-standard unit of measure codes (kg vs KGM, pcs vs H87)
Rounding errors exceeding 0.01€
Incorrect ISO 3166 country code formats (RO vs ROU)
Incompatible billing/delivery dates (delivery more than X days before invoicing)
Invalid VAT codes (S, Z, E, AE, K, G, O, L, M) relative to the transaction type
Result: 8-15% of invoices are rejected by the tax authority after submission → requiring manual re-invoicing, re-submission, and monthly rejection log reporting.
The hidden cost of rejections
For a client with 3,000 invoices/month and a 10% rejection rate = 300 rejections/month × 8 min/rejection (analysis + correction + resubmission) = 40h/month of accounting effort = ~€6,500/year on this issue alone.
Plus fiscal risk: repeated rejections on the same rules → tax audits + penalties.
The Solution: Smart Layer Compliance Hub with pre-submission semantic validation
Azuvio Compliance Hub intercepts the invoice between ASiS and the tax authority portal and performs semantic validation against 40+ CIUS-RO rules before transmission:
1. Validation of CPV codes against active tax authority catalogs
2. Cash VAT validation for eligible customers
3. Normalization of units of measure to UN/ECE Recommendation 20 codes
4. Verification of totals with a 0.01€ tolerance and bank rounding
5. ISO 3166-1 alpha-2 vs alpha-3 country code validation
6. Coherence checks for billing/delivery dates with configurable rules
7. Validation of VAT code + transaction type + customer country combinations
Result: The rejection rate drops from 8-15% to <1% (a 10-15x reduction).
Quantified benefits
For the same client with 3,000 invoices/month:
Rejections drop from 300/month to <30/month (-90%)
Accounting effort drops from 40h/month to <4h/month (-90%)
Annual savings: ~€5,800
Compliance Hub cost: ~€6-10k/year for the e-invoicing module
ROI: achieved through time reduction + elimination of fiscal risk + real-time CFO dashboard
Real-time CFO Dashboard
The Compliance Hub provides a CFO dashboard featuring: daily sent/accepted/rejected invoices, top failing rules, top problematic customers, SLA alerts for old rejections, and monthly reports for statutory audits.
Combination with SAF-T D406
The Compliance Hub also covers SAF-T D406 reporting (see dedicated article) — the investment is cumulative, offering ~85% savings on total compliance effort.
See «SAF-T D406 for ASiS» or the compliance savings calculator.