From 14 October 2025, the classic Single Administrative Document (SAD) will be replaced by the new H1 digital import declaration, based on structured XML messages.
🔹 Companies must adapt IT systems, integrate with ERP, and coordinate with customs agents.
🔹 The Spanish Customs Authority (AEAT) already provides technical guides and an implementation timeline.
⚠️ The shift from SAD to H1 is more than a format change — it’s a digital, technical and legal transformation. Preparing early will be key.
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