Contract number: [ complete ]  Service contract conditions of December 2018  5. AUTHORISED PERSONS IN E-PRIOR  6. VALIDITY AND DATE OF ISSUANCE OF ELECTRONIC DOCUMENTS  5.1. The  contractor 's legal representative shall designate one or more  authorised person(s)  for  each module, as defined in Article 2 of the present agreement. These persons are authorised to  access to the system and, depending on the assigned roles, may sign or transmit documents  through it.  5.2. The  contracting authority shall grant access to the system to the  authorised person(s) designated by the  contractor . For this purpose, the latter must provide the  contracting  authority with a list of the  authorised person (s) indicating their assigned roles for each  module. The list must be drawn up using the access rights forms available on the  Documentation Webpage indicated in Article I.3 of the present agreement.  The  contracting authority may delegate the right to grant access to the system to the  contractor 's legal representative, who may subsequently sub-delegate it to  authorised persons .  5.3. User roles enabling these  e-PRIOR authorised person(s) to sign legally binding  documents are granted only upon submission of supporting documents proving that the  authorised person is empowered to act as a legal representative of the  contractor  from the  date into force of the present agreement.  For the  e-Ordering  module, the contractor commits to appoint a single  authorised person  as a  signatory.  5.4. The  contractor 's legal representative commits to take all necessary steps to notify the  contracting authority  in due time of any event affecting the list of  authorised person (s).  6.1. Any electronic document and related attachments exchanged via  e-PRIOR  (or any other  authorised platform) qualify as  EDI message .  6.2. The parties agree that any document exchanged through such a system:  This is provided that it does not contain any dynamic features capable of automatically  modifying it.  6.3. An  order is only regarded as a valid transaction once the following steps have been  completed:  a) the  order  message has been successfully received by the  contractor  (contract body and  data appendix sent by the  contracting authority  to the  contractor );  (d) constitutes evidence of the information contained in it and is admissible as evidence  in judicial proceedings. (c) is legally binding on the parties has full effect once an e-PRIOR authorised person  has performed the "sign" action in e-PRIOR; and  (b) is deemed to be the original of the document;  (a) is considered equivalent to a paper document;  48 