CFDI Validator

The CFDI Validator verifies electronic invoices against Mexican CFDI standards and business rules to ensure format correctness and data integrity. It is designed for accountants, developers integrating ERP workflows, and internal audit teams. The tool parses CFDI XML, applies version-aware schema checks, and runs a rule set to validate required fields, totals, currency usage, and tax calculations. It produces a structured result and a detailed error list suitable for remediation. Conceptually, validation occurs in three layers: structural conformity (XML and XSD), data coherence (field presence and consistent sums), and policy compliance (business rule checks). Unique value lies in its offline, version-aware engine that can be used in bound environments without external SAT queries, with outputs ready for integration and reporting. Core features include per-issue codes, severity levels, and exportable reports; optional batch processing and API hooks enable automated pipelines in enterprise systems. Use cases include pre-submission invoice checks, SOX-like controls for finance teams, and developer validation during integration of invoicing modules. The tool excels when teams need fast, deterministic validation feedback, audit-ready reports, and clear remediation guidance without reliance on live SAT validation.