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2.An invitation to tender shall contain at least:
(a)a reference to the contract notice;
(b)full information, where applicable, on the electronic availability of, and access to, the procurement documents;
(c)the formal tender requirements, in particular the time limit for the receipt of the tenders, the address to which the tenders must be sent, the language or languages in which the tenders must be drawn up, the format in which the tender must be submitted and the period during which a tender must remain valid;
(d)options concerning additional products, services and works, as well as the number of possible renewals and extensions to the contract, if any;
(e)the list of documents to be submitted by the tenderers; and
(f)the relative weighting of criteria for the award of the contract or, where appropriate, the descending order of importance for such criteria, if they are not specified in the contract notice.
3.The invitation to tender shall also include:
(a)a copy of the specifications defining the ECB's requirements or, in the case of a competitive dialogue or innovation partnership, a copy of the request for a proposal defining the ECB's needs;
(b)a copy of the draft contract, of the ECB's general terms and conditions or of the document specifying the key features of the contract; and
(c)any other documentation which the ECB considers to be of relevance.