Contract number: [ complete ]  Service contract conditions of December 2018  ‘e-Invoicing’  is the module in  e-PRIOR  enabling  supplier s to view all credit notes and cost  claims and related supporting documents, sent to and received from the  contracting authority .  For  suppliers  authorised to do so, the  e-Invoicing  module also allows the creation of invoices,  credit and debit notes, and their sending to  contracting authorities .  ‘Interface control document’ : the guideline document which lays down the technical  specifications, message standards, security standards, checks of syntax and semantics, etc. to  facilitate machine-to-machine connection. This document is updated on a regular basis and is  available on the  e-PRIOR  website. ‘Invoice’:  electronic document issued by the  contractor  listing goods supplied and services  rendered and the amount due for payment by the  contracting authority .  ‘Own  system’: the information processing system (computer or network) that is  predominantly controlled by the parties. Telecommunication connections leased from a  network operator, for instance, do not fall within this scope.  ‘Order’:  electronic document equivalent to the specific contract, order form, direct contract  or purchase order, by which the contracting authority requests by electronic means the  provision of services or goods under the conditions and at the prices previously quoted by the  contractor. The order, which is composed of a contract body and data appendix, must be  signed electronically by the contractor and returned to the  contracting authority  for signature.  ‘Receiving advice’ or 'Receipt Advice':  electronic document issued by the  contracting  authority  attesting the conformity of the goods or services received according to the terms of  the contract, facilitating record accuracy and invoicing procedures.  ‘Request for quotation’ : electronic document by which the  contracting authority  invites the  contractor to specify the quote details & the prices for a potential order.  ‘Service receipt’:  data reflecting the provision of "intramuros" services that is recorded by  the contractor in the premises and on information systems of the  contracting authority  in the  context of time and means service contracts. It enables the transmission of timesheets or any  other supporting documentation that should be sent to the  contracting authority  for validation.  Once it has been validated, the  contracting authority  issues a  receiving advice . ‘Standards’: a set of codes, lists and guidelines accepted by the parties for the electronic  interchange of  EDI messages .  'Supplier or contractor': a legal or natural person providing goods or services to the  contracting authority and exchanging the relevant electronic documents (listed in the  definition of e-PRIOR) with the  contracting authority .  ‘Supplier portal’ : the  e-PRIOR portal, which allows the contractor to receive or exchange  electronic documents, such as quotations,  orders ,  dispatch and receiving advices  or  invoices ,  through a graphical user interface. When necessary, these documents can be signed  electronically by the  authorised persons .  ‘Third-party service provider’:  company enabling the exchange of financial and business  documents electronically on behalf of the supplier to and from  e-PRIOR via a machine-to- machine communication.  46 