Entry of the definitive period for the AES System Export Declarations
It is recalled that, as published in the Export Declaration Web Services guide AES, the entry of the definitive period for AES export declarations will take place at 23:59:59 on 14/12/2025 (UTC time), and a time of unavailability for the registration of declarations is announced from 23:59:59 on 14/12/2025 until 01:00:00 on 15/12/2025 peninsular time (CET), to avoid problems in this time difference between UTC and peninsular time (UTC + 1). Please note that all export declarations accepted from December 15, 2025 (inclusive) must be submitted with data in the final period format.
It is also important to remember the importance of the moment in which the system enters the final period, the need to have sufficiently tested the data validations in that period, and that it is very important that all operators have their systems correctly configured to validate the rules and conditions based on that key date (14/12/2025).
The published AES Export Declaration Web Services guide explains how operators can choose the data period (provisional or final) they wish to test in the test environment.
A seminar for operators will be held during the last week of October to clarify any doubts.