Swift MX Validator

Purpose & User Intent: The Swift MX Validator checks MX-formatted strings against configurable schemas. It is used by Swift developers, QA engineers, data engineers, and integration teams to verify that input strings meet syntax, length, and region-specific constraints before processing, storage, or API submission. Typical use cases include form field validation, payload checks in API tests, and data-pipeline hygiene where MX patterns must be enforced prior to ingestion.
Core Logic & Features: This tool functions as a form-based multi-field calculator. Required inputs include target_string and validation_schema; optional context includes region, version, and checksum_mode. Capabilities include regex-based pattern matching, length validation, checksum verification (including Luhn-like schemes), and component extraction (prefix, numeric parts). Advanced users can supply custom schemas, enable batch validation, and obtain structured reports with per-field results.
Inputs & Outputs: Inputs: target_string (string), schema (string enum), region (string, optional), version (string, optional). Outputs: is_valid (boolean), normalized_string (string), error_code (string), error_message (string). Formatting: normalized_string uses canonical casing and whitespace normalization; components are returned when available.
Algorithms & Calculations: normalization, structural validation, and rule-based checks; normalization trims, uppercases, and splits; structural validation enforces length/pattern; rules enforce region-specific constraints and checksum if configured.
Error & Edge Cases: Missing required inputs trigger specific errors; unsupported schemas yield schema_error; region mismatch returns region_error; externally sourced rule data unavailability yields retry guidance but does not abort deterministically.
Industry/Region & Localization: supports region-aware formats, currency units not involved; aligns with standard software validation practices for cross-border deployments.
Assumptions & Exclusions: MX definitions are provided via schemas; tool does not perform network lookups or authentication; not a general marketplace validator and excludes UI concerns.