Contract number: ECHA/2020/666  such liability is caused by the contractor during or as a consequence of the  implementation of the FWC , Article II.6.3 applies. II.6.5  If the contractor is composed of two or more economic operators (i.e. who  submitted a joint tender), they are all jointly and severally liable to the contracting  authority for the  implementation of the FWC .  II.6.6  The contracting authority is not liable for any loss or damage caused to the  contractor during or as a consequence of  implementation of the FWC , unless the  loss or damage was caused by wilful misconduct or gross negligence of the  contracting authority.  II.7.1  The contractor must take all the necessary measures to prevent any situation of  conflict of interest  or  professional conflicting interest . II.7.2  The contractor must  notify  the contracting authority in writing as soon as possible  of any situation that could constitute a  conflict of interest or a  professional  conflicting interest during the  implementation of the FWC . The contractor must  immediately take action to rectify the situation. (c) decide not to award a specific contract to the contractor. (b) require the contractor to take further action within a specified deadline; (a) verify that the contractor’s action is appropriate; (b) any natural person with the power to represent it or take decisions on its  behalf; (a) its  personnel ; (c) third parties involved in the  implementation of the FWC , including  subcontractors. II.8.1. The contracting authority and the contractor must treat with confidentiality any  information or documents, in any format, disclosed in writing or orally, relating to  the  implementation of the FWC  and identified in writing as confidential.  (b) ensure the protection of such  confidential information or documents  with the  same level of protection as its own  confidential information or documents  and  in any case with due diligence; (a) not use  confidential information or documents  for any purpose other than to  perform its obligations under the FWC or a specific contract without the prior  written agreement of the other party; II.8.2. Each party must:  II.7.3  The contractor must pass on all the relevant obligations in writing to:  II.8. CONFIDENTIALITY  II.7. CONFLICT OF INTEREST AND PROFESSIONAL CONFLICTING INTERESTS  The contracting authority may do any of the following:  The contractor must also ensure that the persons referred to above are not placed  in a situation which could give rise to conflicts of interest. 27 