FIX Protocol Encyclopedia

The most comprehensive reference for FIX troubleshooting, message structure, and connectivity.

FIX Errors

Comprehensive guide to FIX error codes, reject messages, and troubleshooting

Session layer protocols, logon, logout, heartbeat, and sequence management

Order messages, execution reports, business logic, and application-level protocols

Market data, order types, trading rules, and exchange-specific implementations

Network setup, TCP/IP, SSL/TLS, firewall configuration, and connection management

Complete reference for FIX tags, message types, field definitions, and data types

Upload your FIX logs to automatically detect errors and issues.

Complete reference for all FIX tags and their meanings.