Contract number: ECHA/2020/724  Restricted  Service contract conditions of December 2018  standards of the profession to which a contractor or a related person belongs, including any  conduct leading to sexual or other exploitation or abuse, or any wrongful conduct of the  contractor or a related person which has an impact on its professional credibility where such  conduct denotes wrongful intent or gross negligence.  ‘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;  ‘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 Union’s budget.  ‘Notification’  (or ‘notify’): form of communication between the parties made in writing including  by electronic means; ‘Performance of the 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 perform  the contract;  ‘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  performance of the contract ; ‘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 perform the contract to an appropriate quality  standard. ‘Related person’ : any natural or legal person who is a member of the administrative,  management or supervisory body of the contractor, or who has powers of representation,  decision or control with regard to the contractor;  ‘Result’ : any intended outcome of the  performance of the contract , whatever its form or nature.  A  result  may be further defined in this contract as a deliverable. A  result  may, in addition to  newly created materials produced specifically for the contracting authority by the contractor or  at its request, also include  pre-existing materials ;  ‘Supplier portal’ : the  e-PRIOR portal, which allows the contractor to exchange electronic  business documents, such as invoices, through a graphical user interface. In the event of a joint tender submitted by a group of economic operators and where the group  does not have legal personality or legal capacity, one member of the group is appointed as leader  of the group. . Each provision of this contract is severable and distinct from the others. If a provision is or  becomes illegal, invalid or unenforceable to any extent, it must be severed from the remainder  12  II.3. SEVERABILITY  II.2. ROLES AND RESPONSIBILITIES IN THE EVENT OF A JOINT  TENDER 