 2019  Contract number: [ complete ]  II.6.3 The contractor is liable for any loss or damage caused to the contracting authority during  or as a consequence of  implementation of the FWC , including in the event of  subcontracting, but only up to an amount not exceeding three times the total amount of  the relevant specific contract. However, if the damage or loss is caused by the gross  negligence or wilful misconduct of the contractor or of its  personnel  or subcontractors,  the contractor is liable for the whole amount of the damage or loss.  II.6.4 If a third party brings any action against the contracting authority in connection with the  implementation of the FWC , including any action for alleged breach of intellectual  property rights, the contractor must assist the contracting authority in the legal  proceedings, including by intervening in support of the contracting authority upon  request. If the contracting authority’s liability towards the third party is established and that 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; II.7.3  The contractor must pass on all the relevant obligations in writing to:  (c) third parties involved in the  implementation of the FWC , including subcontractors. (b)  any natural person with the power to represent it or take decisions on its behalf; (a) its  personnel ; 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. II.7. CONFLICT OF INTEREST AND PROFESSIONAL CONFLICTING INTERESTS  19 