Open Procedure, Pursuant To Art. 71 Of Legislative Decree 31 March 2023 N. 36, For The Conclusion Of A Framework Agreement Referred To In Art. 59 Paragraph 4, Letter. A) Of Legislative Decree No. 36/2023 (More Operators Without Reopening The Competitive Comparison) For The Assignment Of The Integrated Reception Activity, Both Ordinary And Relative Expansion, Within The Sai Network (Integration Reception System) - National Fund