The parties could therefore attempt to more accurately cover this period between signing and closing by inserting route use clauses allowing the buyer (or parties) to exit the transaction if there is a range of F-W with negative effects (subject to the thresholds to be negotiated), which would in fact lead to the introduction of some sort of MAC clause. , but very specific to a situation. The development of this clause must be carefully considered in order to limit certain risks: (i) too much participation by the purchaser could be contrary to competition law10; (ii) it may also expose the buyer to a risk of liability if the target group or seller is likely to suffer harm and, depending on the circumstances, jeopardize the buyer`s position in a potential right of the seller to a breach of insurance and guarantees. As a result, a number of current GNP, which contain performance criteria and would be determined on the basis of the current or narrow periods, could lead to a much lower price fixing than the parties expect, which could result in wind effects for buyers and very adverse effects for sellers. However, these mechanisms are based on the principle of target audience management in normal transactions, which should not be carried out in a manner that should have a negative impact on compliance with performance criteria during the reporting period. However, the sudden effects of the health crisis on normal activity are not entirely within the control of the parties (although the management of the target group by their leaders is an important element of limitation or, on the contrary, aggravating) and which, as a general rule, is not taken into account in the parties` obligations with respect to the reference period to achieve the performance criteria. It will therefore be necessary to monitor changes in the offer of guaranteed insurance in the context of an economic crisis, as well as the cost of such an insurance policy (which has decreased due to increasing competition), particularly in the sectors most affected by the crisis, or because research and development granted by sellers may be rarer or the buyer will (probably) be willing to reduce its transaction costs. SPAs that have a price adjustment mechanism based on the accounts generally hold a final price determination procedure after closing, once the accounts have been established and the purchaser has submitted its initial price adjustment proposal on the basis of these accounts. This contract procedure is based on the time it takes to exchange proposals for adaptation between buyers and sellers. In this regard, it is often expected that the seller will accept this proposal, since the seller has not received a response within a specified time after receiving the buyer`s first proposal, so that the final price can be definitively set.