22.Signature of the contract and performance guarantee  Page 13 of 17  August 2020 c4b_itt_en.doc  22.1 The successful tenderer will be informed in writing that its tender has been accepted  (notification of award). Upon request of the contracting authority and before the signature of  the contract with the successful tenderer, the successful tenderer shall provide the  documentary proof or statements required under the law of the country in which the  company (or each of the companies in case of a consortium) is effectively established, to  show that it is not in any of the exclusion situations listed in Section 2.6.10.1. of the practical  guide. This evidence or these documents or statements must carry a date not earlier than one  year before the date of submission of the tender. In addition, a statement shall be provided  that the situations described in these documents have not changed since then.  22.2 Upon request of the contracting authority, the successful tenderer shall also provide evidence  of financial and economic standing and technical and professional capacity according to the  selection criteria for this call for tenders specified in the additional information about the  contract notice. The documentary proofs required are listed in Section 2.6.11. of the practical  guide.  22.3 If the successful tenderer fails to provide the documentary proof or statement or the evidence  of financial and economic standing and technical and professional capacity within 15  calendar days following the notification of award or if the successful tenderer is found to  have provided false information, the award will be considered null and void. In such a case,  the contracting authority may award the tender to the next lowest tenderer or cancel the  tender procedure.  22.4 The contracting authority reserves the right to vary quantities specified in the tender by +/-  100 % at the time of contracting and during the validity of the contract. The total value of the  supplies may not, as a result of the variation rise or fall by more than 25 % of the original  financial offer in the tender. The unit prices quoted in the tender shall be used. 22.5 Within 30 days of receipt of the contract signed by the contracting authority, the selected  tenderer must sign and date the contract and return it, with the performance guarantee (if  applicable), to the contracting authority. On signing the contract, the successful tenderer will  become the contractor and the contract will enter into force.  For contracts with a value of less than EUR 300 000, the contracting authority may,  depending on its assessment of the risks, decide not to require proofs for selection criteria. The contracting authority may, depending on its assessment of the risks, decide not to  require proofs for financial and economic standing and technical and professional capacity.  The contracting authority may waive the obligation of any candidate or tenderer to submit  the documentary evidence referred to above if such evidence has already been submitted for  the purposes of another procurement procedure, provided that the issue date of the  documents does not exceed one year and that they are still valid. In this case, the candidate  or tenderer must declare on his/her honour that the documentary evidence has already been  provided in a previous procurement procedure and confirm that his/her situation has not  changed.  Documentary evidence of the financial and economic capacity and/or of the technical and  professional capacity according to the selection criteria specified in the additional  information about the contract notice shall be submitted. (See further Section 2.6.11. of the  practical guide). By submitting a tender, each tenderer accepts to receive notification of the outcome of the  procedure by electronic means. Such notification shall be deemed to have been received on  the date upon which the contracting authority sends it to the electronic address referred to in  the offer. 