gwtxml

gwtxml is an XML-based data interchange format used to describe and transport gateway transactions within distributed processing environments. It is employed in various gateway architectures—such as financial payment gateways, API gateways, and telecom network gateways—to enable structured communication between components like edge gateways, processing engines, and settlement systems.

The specification centers on a hierarchical XML schema. A typical gwtxml document includes a root element, versioning information, and a set of defined child elements such as Transaction, Gateway, Status, Timestamp, and Payload. Optional sections often appear for Routing, Metadata, and History. Validation is usually performed against an XML Schema Definition (XSD) or Relax NG, with versioning to maintain compatibility as the schema evolves.

Data model: Transaction carries identifiers, type, amount, currency, and parties involved. Gateway identifies the participating nodes or services. Status records the current state (e.g., pending, in_progress, completed, failed). Timestamp records the event time. Payload is a domain-specific container for transaction details and may be encrypted or tokenized; interfaces commonly provide means to extract or map payload contents for downstream processing.

Usage and interoperability: gwtxml is typically transmitted over messaging channels (HTTP, JMS, or other queues) and consumed by backend services or orchestration engines. It supports serialization to JSON for systems that prefer JSON, through mapping layers. Security considerations include restricting access to payload data and protecting transport channels.

Relation and status: There is no single universally accepted gwtxml standard; implementations vary by vendor and project. The format is primarily used in specific ecosystems and may be complemented by accompanying documentation, schemas, and code libraries to enforce consistency.