EUOSHA/2021/OP/F/SE/0142  In addition, annual review meetings (one per year) will be organised and will last 2 half-days (starting  early afternoon on day 1 and finishing at midday on day 2). They will be dedicated to the revision of the  current status and planning ahead, and shall be minuted.  All persons attending these meetings must be those proposed in the tender and all expenses will be  borne by the tenderer (including travel and accommodation costs, daily allowances and staff fees).  The contractor will not be able to replace the staff described in the tender without explicit authorisation  from EU-OSHA for the whole duration of the contract. EU-OSHA may reject any CV considered  inadequate.  For any additional meeting, the conditions of reimbursement will apply following the prices stated in the  financial models ( Annexes X-1 ,  X-2  and  X-3 ) and the conditions of Article I.5 of the Model of Framework  Contract.  For the entire duration of the framework contract, the contractor must provide sufficient resources to  guarantee the stability of the service offered and the quality of supplies necessary for the proper  performance of the contract.  The framework contract imposes no obligation on EU-OSHA to call on the services of the contractor.  Only the implementation of the framework contract through specific contracts is binding on EU-OSHA.  For all exchanges with the contractor during the implementation of the contract, as well as for possible  subsequent proceedings for the purposes of EDES (European Union’s Early Detection and Exclusion  System), the  contracting authority  may use an electronic exchange system meeting the requirements  of Article 148 of Regulation (EU, Euratom) 2018/1046 of the European Parliament and of the Council of  18 July 2018 on the financial rules applicable to the general budget of the Union. At the request of the  contracting authority , the use of such a system shall become mandatory for the  contractor at no additional cost for the  . Details on specifications, access, and terms  and conditions of use will be provided in advance.  2.9  Electronic exchange system 40 