(110)In line with the principles of equal treatment and transparency, the successful tenderer should not, for instance where a contract is terminated because of deficiencies in the performance, be replaced by another economic operator without reopening the contract to competition. However, the successful tenderer performing the contract should be able, in particular where the contract has been awarded to more than one undertaking, to undergo certain structural changes during the performance of the contract, such as purely internal reorganisations, takeovers, mergers and acquisitions or insolvency. Such structural changes should not automatically require new procurement procedures for all public contracts performed by that tenderer.