OVERVIEW Citibank Credit Card Issuance Trust's Citiseries class 2017-A6 is an ABS transaction secured by a collateral certificate, series 2000, issued by Citibank Credit Card Master Trust I. We assigned our 'AAA (sf)' rating to the class 2017-A6 notes. The rating reflects our view of the transaction's credit support, payment structures, and legal structures, among other factors. TORONTO (S&P Global Ratings) May 22, 2017--S&P Global Ratings today assigned its 'AAA (sf)' rating to Citibank Credit Card Issuance Trust's (CCCIT's) Citiseries class 2017-A6 notes (see list). The note issuance is an asset-backed securities transaction backed by a collateral certificate, series 2000, issued by Citibank Credit Card Master Trust I (CCCMTI). The series 2000 collateral certificate is secured by a security interest