Legal Instrument

The World Customs Organization (WCO) Compendium on "Building a Single Window Environment" provides comprehensive guidance for developing and implementing Single Window systems. The two-volume resource offers detailed guidance on various aspects of Single Window implementation through separate parts focused on specific building blocks.

Key implementation guidance includes:

• Technical architecture for Single Window systems
• Electronic data exchange standards
• Interoperability frameworks
• Data harmonization protocols
• Security requirements for electronic transactions
• Business process integration methods
• Risk management systems
• Cross-border data exchange mechanisms
• Electronic payment integration
• Digital documentation standards