IBAN Generator

Generates IBAN strings by country-specific rules to support development and testing pipelines. It accepts a country code and optional BBAN components to form a base structure, then computes the correct two-digit checksum and assembles the final IBAN. The approach preserves the standard order: country code, checksum, and BBAN, ensuring syntactic validity for most validation rules used in software tests. The tool is useful for QA engineers validating payment workflows, data pipelines, and integration points where real customer data cannot be used.
Conceptually, the generator relies on a mapping of each country to its IBAN length and allowed BBAN patterns. If a length_override is supplied, it supersedes the country-specific length only if it remains valid for that country; otherwise an error is raised. When inputs include bank_code or account_number, these are embedded into the BBAN while honoring length constraints. If inputs are omitted, the tool produces deterministic or random alphanumeric sequences that fit the target BBAN length. The compute step uses a standard mod-97 checksum calculation to derive the 2-digit check segment. The tool is designed for testing, data seeding, and demonstration environments.
Benefits include consistent IBAN structure across test datasets, reduced manual data creation, and reproducible results via an optional seed. Use cases cover unit tests for payment processors, demo environments, and compliance validation. Unique value lies in producing country-accurate lengths with checksum validity, while clearly marking generated data as synthetic for testing purposes.