5.58 Final tenders must include "all elements required and necessary for the performance of the project"
5.59 The contracting body can clarify, specify and fine tune tenders once they have been received provided that this "does not involve changes to the basic features of the tender or the call for tender, variations in which are likely to distort competition or have a discriminatory effect." This process cannot result in changes to the basic features of the Final Tenders and cannot distort competition or seen to be having a discriminatory effect. These conditions would rule out for example, most instances of pricing changes other than those imposed by outside factors such as the placing of the interest rate swap.
5.60 Legal advice should be taken on what constitutes clarifying, specifying and fine tuning but it may include the following: