Contract number: [ complete ]   2019  ‘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; ‘Irregularity’ : any infringement of a provision of Union law resulting from an act or omission  by an economic operator, which has, or would have, the effect of prejudicing the Centre’s  budget;  ‘Notification’  (or ‘notify’): form of communication between the parties made in writing  including by electronic means; ‘Order form’ : a simplified form of specific contract by which the contracting authority orders  services under this FWC;  ‘Performance of a specific contract’ : the execution of tasks and delivery of the purchased  services by the contractor to the contracting authority; ‘Personnel’ : persons employed directly or indirectly or contracted by the contractor to  implement the FWC;  ‘Pre-existing material’ : any material, document, technology or know-how which exists prior  to the contractor using it for the production of a  result  in the  implementation of the FWC ; ‘Pre-existing right’ : any industrial and intellectual property right on  pre-existing material ; it  may consist in a right of ownership, a licence right and/or right of use belonging to the  contractor, the  creator , the contracting authority as well as to any other third parties;  ‘Professional conflicting interest’ : a situation in which the contractor’s previous or ongoing  professional activities affect its capacity to implement the FWC or to perform a specific contract  to an appropriate quality standard. ‘Related person’ : any person who has the power to represent the contractor or to take decisions  on its behalf; ‘Request for services’ : a document from the contracting authority requesting that the  contractors in a multiple FWC provide a specific tender for services whose terms are not  entirely defined under the FWC; ‘Result’ : any intended outcome of the  implementation of the FWC , whatever its form or nature,  which is delivered and finally or partially approved by the contracting authority. A  result  may  be further defined in this FWC as a deliverable. A  result  may, in addition to materials produced  by the contractor or at its request, also include  pre-existing materials ; ‘Specific contract’ : a contract implementing the FWC and specifying details of a service to be  provided;  ‘Substantial error’ : any infringement of a contract provision resulting from an act or omission,  which causes or might cause a loss to the Centre’s budget.  17 