There is also a need for special protection in the case of payment systems and financial markets. This applies for example to the position-closing agreements and netting agreements to be found in such systems as well as to the sale of securities and to the guarantees provided for such transactions as governed in particular by Directive 98/26/EC of the European Parliament and of the Council of 19 May 1998 on settlement finality in payment and securities settlement systems(5). For such transactions, the only law which is material should thus be that applicable to the system or market concerned. This provision is intended to prevent the possibility of mechanisms for the payment and settlement of transactions provided for in the payment and set-off systems or on the regulated financial markets of the Member States being altered in the case of insolvency of a business partner. Directive 98/26/EC contains special provisions which should take precedence over the general rules in this Regulation.