# Article 3 — Receipt of the notification and acknowledgement of receipt **Commission Implementing Regulation (EU) 2025/304 · binding · OJ L, 2025/304, 20.2.2025 · dated 31 Oct 2024 [in force]** *In force · Commission Implementing Regulation (EU) 2025/304, OJ L, 2025/304, 20.2.2025 · Checked against EUR-Lex on 26 Oct 2026 · [Official source](https://eur-lex.europa.eu/eli/reg_impl/2025/304/oj/eng)* Within five working days of receipt of the notification, the competent authority shall send electronically, on paper, or in both forms, an acknowledgement of receipt to the notifying entity. The acknowledgement of receipt shall include the contact details of the department, function or staff member of the competent authority handling the notification.