Performances and use of RCS. 5.1 For all the duration of the guarantee as provided by art.13 below, HT guarantees that the performances and the functioning level of RCS, as long as correctly utilized by the End User, shall be those described in the Technical Specifications, being however agreed that HT cannot be held liable should certain functionalities and/ performances of RCS shall be limited due to future enhancements and/or improvements of third parties technologies or products. It remains understood however that HT does not make any attestation about the results that the End User can achieve utilizing RCS and does not guarantee that the operations realized utilizing RCS shall be uninterrupted and/or without errors.