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Message exchange customers in temporary storage: apply now for testing of new declarations

Publication date 3.2.2022 10.00
Press release

The new temporary storage declarations will be introduced on 24 September 2022. Message exchange customers that send summary declaration messages (IE344) and other related messages concerning goods arriving from EU airports or ports must start using the new declarations and test them with Customs. 

Testing schedule

Before message exchange customers can start using the new declarations, they must first test the declarations with Customs. You can start applying for this testing from 3 February 2022. The testing with Customs will start in May. Customs will schedule a time for the testing with the business once the application has been received. Software suppliers and service providers will test the declarations first. After that, message exchange customers using their own server certificates will test the declarations. 

Message exchange customers must test and start using the new temporary storage declarations no later than on 3 October 2022.

How do I apply for testing?

Message exchange customers in temporary storage can apply for testing using the service “Applying for a message exchange authorisation”. You log in to the service using identification and the mandate code “Customs clearance”. Message exchange customers must have an EORI number. 

Select “New application” if you have not sent any messages to the new customs clearance system (UTU) before. If you are already sending messages to this system, select “Amendment application”.

Applying for the testing – foreign businesses

If a business applying for message exchange customer status has an EORI number that is not Finnish, the business must apply for testing using customs form 1092 “Application for message exchange with Finnish Customs UTU”. Request the form from edi-luvat(at)

Section G of the form lists only some of the declarations, so in section H, Additional information, provide separately the declarations regarding which you are applying for a new authorisation or amendment. Indicate which of the following you wish to start using:

  • messages regarding hearing: hearing request (FI330) and hearing response (FI346)
  • TSD information (FI319) and Customs’ control notification (FI350)

Testing the temporary storage messages

The software suppliers and service providers must test all test cases with Customs. The actual message exchange customers are required to test a few test cases with Customs in the message exchange testing service. Businesses that use a service provider in generating and transmitting messages are also required to submit an application for message exchange to Customs, but they do not have to test the declarations with Customs.

More information: UCC(at) 

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