ANNEX IIISupplementary provisions
ANNEX III ERRU MESSAGE PROVISIONS 1. GENERAL TECHNICAL REQUIREMENTS 1.1. The central hub will provide both synchronous and asynchronous interfaces for the exchange of messages. Member States may choose the most suitable technology to interface with their own applications. 1.2. All messages exchanged between the central hub and the national systems must be UTF-8 encoded. 1.3. Member States will ensure that their national systems can receive and process messages containing Greek or Cyrillic characters. 2. XML MESSAGES STRUCTURE AND SCHEMA DEFINITION (XSD) 2.1. The general structure of XML messages shall follow the format defined by the XSD schemas installed in the central hub. 2.2. The central hub and the national systems shall transmit and receive messages that conform to the message XSD schema. 2.3. National systems will be capable of sending, receiving and processing all messages corresponding to any of the functionalities set out in Annex II. 2.4. The XML messages shall include at least the minimum requirements laid down in the Appendix to this Annex.