Item Number Column/Field Name Notes Item 2(a)(1) Asset Number Type With respect to Asset Number 1, original file reflected one loan with Original Loan Amount of 62220000 however this is now split into Asset Number 1, 1A, 1B, 1C, 1D, and 1E reflecting Pari Passu A1 notes with Original Loan Amounts of 25000000, 25000000, 3000000, 3000000, 3000000 and 3220000 respectively. Appraisal, financial, and property level information will only be reflected on Asset Number 1. Similar splits are reported for assets 2 (adding loan 2A, 2B, and 2C), 4 (adding 4A), 5 (adding 5A), and 8 (adding 8A) each are a pari passu loan structure. Item 2(c)(1) Originator UBS AG, by and through its branch office at 1285 Avenue of the Americas, New York, New York (UBS AG), Ladder Capital Finance LLC (LCF), KeyBank National Association (KeyBank), Societe Generale (SG), Cantor Commercial Real Estate Lending, L.P. (CCRE), and Natixis Real Estate Capital LLC (Natixis). Item 2(c)(17) Periodic Principal and Interest Payment Securitization Amount With respect to each mortgage loan, the payment shown reflects the periodic principal and interest payment as of the Cut-off Date (or in case of any mortgage loan that has its first due date in January 2018, zero) Item 2(c)(18) Scheduled Principal Balance Securitization Amount With respect to each mortgage loan, the principal balance shown reflects the principal balance as of the Cut-off Date, assuming that any payment due on the Cut-off Date is made, and that no voluntary principal prepayments or casualty or condemnation proceeds are received. Item 2(c)(29)(i) Prepayment Lock Out End Date With respect to each mortgage loan, the Prepayment Lock Out End Date reflects the calendar day prior to the first payment date where yield maintenance or prepayment penalty is permitted. Item 2(d)(20) Physical Occupancy Securitization Percentage With respect to each mortgage loan, the occupancy percent shown is indicative of the physical occupancy information available as of securitization, however, may also include tenants that have signed leases, but are not yet in occupancy or may not be paying rent. Item 2(d)(28)(i) Financials Securitization Date For Asset Numbers 9, 12, 12.01, 12.02, 12.03, 12.04, 12.05, 12.06, 12.07, 12.08, 22, and 48, the Financials Securitization Date has been left blank as it was not available at the time of securitization. Item 2(d)(28)(xv) Debt Service Coverage Net Operating Income Securitization Percentage With respect to any mortgage loan that is part of a mortgage loan structure evidenced by multiple pari passu notes (including notes outside the trust), the value shown is inclusive of debt service related to the entirety of the mortgage loan structure (or, if the mortgage loan is part of the senior portion of a mortgage loan structure that also includes one or more subordinate companion loans, the entirety of the senior portion of such mortgage loan structure). Item 2(d)(28)(xvi) Most Recent Debt Service Coverage Net Operating Income Percentage With respect to any mortgage loan that is part of a mortgage loan structure evidenced by multiple pari passu notes (including notes outside the trust), the value shown is inclusive of debt service related to the entirety of the mortgage loan structure (or, if the mortgage loan is part of the senior portion of a mortgage loan structure that also includes one or more subordinate companion loans, the entirety of the senior portion of such mortgage loan structure). With respect to any loan that is currently requiring interest-only payments, the value shown is based on the interest-only payment due, except for Asset Numbers 5, 21, 25, 34, and 47, where one month of interest only amount is used and the rest is the constant debt service. Item 2(d)(28)(xvii) Debt Service Coverage Net Cash Flow Securitization Percentage With respect to any mortgage loan that is part of a mortgage loan structure evidenced by multiple pari passu notes (including notes outside the trust), the value shown is inclusive of debt service related to the entirety of the mortgage loan structure (or, if the mortgage loan is part of the senior portion of a mortgage loan structure that also includes one or more subordinate companion loans, the entirety of the senior portion of such mortgage loan structure). Item 2(d)(28)(xviii) Most Recent Debt Service Coverage Net Cash Flow Percentage With respect to any mortgage loan that is part of a mortgage loan structure evidenced by multiple pari passu notes (including notes outside the trust), the value shown is inclusive of debt service related to the entirety of the mortgage loan structure (or, if the mortgage loan is part of the senior portion of a mortgage loan structure that also includes one or more subordinate companion loans, the entirety of the senior portion of such mortgage loan structure). With respect to any loan that is currently requiring interest-only payments, the value shown is based on the interest-only payment due, except for Asset Numbers 5, 21, 25, 34, and 47, where one month of interest only amount is used and the rest is the constant debt service. Item 2(e)(6) Servicer Trustee Fee Rate Percentage With respect to each mortgage loan, this percentage reflects the Trust Advisor Ongoing Fee Rate, the Certificate Administrator Fee Rate, the Servicing Fee Rate, the CREFC (C) IP Royalty License Fee Rate and the Asset Representations Reviewer Fee Rate. Item 2(e)(12) Report Period End Actual Balance Amount With respect to each mortgage loan, the principal balance shown reflects the principal balance as of the Cut-off Date, assuming that any payment due on the Cut-off Date is made, and that no voluntary principal prepayments or casualty or condemnation proceeds are received. Item 2(e)(13) Report Period End Scheduled Loan Balance Amount With respect to each mortgage loan, the principal balance shown reflects the principal balance as of the Cut-off Date, assuming that any payment due on the Cut-off Date is made, and that no voluntary principal prepayments or casualty or condemnation proceeds are received. Item 2(f)(1) Primary Servicer Name The primary servicer names have been truncated due to EDGAR constraints. The full name for Wells Fargo Bank, NA is Wells Fargo Bank, National Association and the full name for Midland Loan Services is Midland Loan Services, a Division of PNC Bank, National Association. Item 2(f)(1) Primary Servicer Name The primary servicer name Wells Fargo Bank, NA updated to Trimont LLC