Page 259

necessary to operate qualified tangible personal property; and all other tangible personal property that is essential to the operations of a computer data center. The term "qualified tangible personal property" also includes building materials physically incorporated into the qualifying data center. To document the exemption allowed under this Section, the retailer must obtain from the purchaser a copy of the certificate of eligibility issued by the Department of Commerce and Economic Opportunity. This item (44) is exempt from the provisions of Section 2-70. (45) Beginning January 1, 2020 and through December 31, 2020, sales of tangible personal property made by a marketplace seller over a marketplace for which tax is due under this Act but for which use tax has been collected and remitted to the Department by a marketplace facilitator under Section 2d of the Use Tax Act are exempt from tax under this Act. A marketplace seller claiming this exemption shall maintain books and records demonstrating that the use tax on such sales has been collected and remitted by a marketplace facilitator. Marketplace sellers that have properly remitted tax under this Act on such sales may file a claim for credit as provided in Section 6 of this Act. No claim is allowed, however, for such taxes for which a credit or refund has been issued to the SB3019 Enrolled LRB104 20255 HLH 33706 b Public Act 104-0468