1. Contracting entities shall keep appropriate information on each contract or framework agreement covered by this Directive and each time a dynamic purchasing system is established. This information shall be sufficient to permit them at a later date to justify decisions taken in connection with:

(a) the qualification and selection of economic operators and the award of contracts;

(b) the use of negotiated procedures without a call for competition by virtue of Article 50;

(c) the non-application of Chapters II to IV of Title II by virtue of the derogations provided for in Chapters II and III of Title I;

(d) where necessary, the reasons why other means of communication than electronic means for the electronic submission have been used.

To the extent that the contract award notice drawn up pursuant to Article 70 or Article 92(2) contains the information required in this paragraph, contracting entities may refer to that notice.