Tulli, the Finnish Customs authority, operates within the government sector and has been established since 1812. With a workforce of 1,001 to 5,000 employees and reported revenue of approximately $576 million, Tulli plays a crucial role in managing customs and transit-related activities in Finland. The organization focuses on facilitating trade and ensuring compliance with customs regulations. A recent document published by Tulli is a customer guidebook on message exchange for transit-related declarations, which outlines the processes and requirements for companies engaging in message exchanges with customs. This guide includes details on transaction channels, message exchange authorization, and the necessary data content for declarations. It also provides instructions for testing services and emphasizes the importance of consultations for companies to understand the message exchange requirements effectively. The limited document corpus indicates that Tulli is primarily focused on providing practical guidance and support to businesses navigating customs procedures in Finland.