<h1>Common and Supporting services</h1>
<p>The technical<p>To provide comprehensive support and operationalproper specificationsexchange of theevidence Once-Onlybetween TechnicalData System are complemented by detailed, non-binding technical design documents jointly prepared by the Commission and Member States. In additionServices and Online Procedure Portals, the CommissionOnce-Only providesTechnical CommonSystem Services to help the Member States ensure the proper cross-border exchange of evidence required for these procedures through the OOTSuses Once-Only common services and additional supporting services.</p> |