Item 2(a)(2) assetNumber With respect to mortgage loans that are secured by multiple properties, the Asset Number has been changed from the X.XX format in the initial Exhibit 102 that was filed on January 17, 2023 to the X-XXX format, for example, 3.01 and 3.02 in the initial Exhibit 102 have been changed to 3-001 and 3-002, respectively. Item 2(c)(1) Originator Name Originator Name for co-originated loans was truncated to only include the originator contributing to the BMO 2023-C4 transaction to meet EDGAR constraints. Item 2(c)(4) Original Term Loan Number For anticipated repayment date mortgage loans (if any): the original term loan number represents the term of the mortgage loan through the anticipated repayment date, rather than the actual Maturity Date. There are no anticipated repayment date mortgage loans included in the trust. Item 2(c)(15) Loan Structure Code For the mortgage loans identified as 70 Hudson Street (Asset Number 1), Rialto Industrial (Asset Number 2), Gilardian NYC Portfolio (Asset Number 3), IPG Portfolio (Asset Number 5), Latitude at South Portland (Asset Number 6), Orizon Aerostructures (Asset Number 7), Park West Village (Asset Number 8), Green Acres (Asset Number 9), 575 Broadway (Asset Number 10), Great Lakes Crossing Outlets (Asset Number 12), WRS Retail Portfolio (Asset Number 15), Triple Net Portfolio (Asset Number 21), Stoney Creek Hotel Portfolio (Asset Number 22), 800 Cesar Chavez (Asset Number 26), Kingston Square Apartments (Asset Number 28), PetSmart HQ (Asset Number 30) and Oak Ridge Office Park (Asset Number 33), each such mortgage loan is evidenced by one or more senior pari passu notes that are part of a whole loan that consists of the subject mortgage loan and one or more senior pari-passu notes and, if applicable, one or more subordinate notes. The other senior pari-passu notes and the subordinate notes are not included in the trust. Item 2(d)(1) Property Name For mortgage loans that are part of a whole loan, the related mortgaged property secures the entire whole loan, including one or more companion loans not included in the trust. Item 2(d)(1) propertyName Asset number 29's property name originally reflected as Hampton by Hilton Inn West Palm Beach-Lake Worth-Turnpike is reported as Hampton by Hilton Inn West Palm Beach-Lake Worth-T. Item 2(d)(2) propertyAddress Asset number 3-001's property address which was originally reflected as 237 East 34th Street in the initial Exhibit 102, is reported as 235-237 East 34th Street. Asset number 3-002's property address which was originally reflected as 114 West 86th Street in the initial Exhibit 102, is reported as 114-116 West 86th Street. Asset number 7-001 's property address which was which was originally reflected as 2522 West 21st Street in the initial Exhibit 102, is reported as 2522-2526 West 21st St. Asset number 11-003 's property address which was originally reflected as 8450 Tanner Williams Road in the initial Exhibit 102, is reported as 8450 Tanner Willams Rd. Asset number 12 's property address which was originally reflected as 4000 Baldwin Road in the initial Exhibit 102, is reported as 4002 Baldwin Road. Asset number 15-001 's property address which was originally reflected as 1492-1548 Hudson Bridge Road in the initial Exhibit 102, is reported as 1460 & 1490-1548 Hudson Bridge Road. Asset number 15-003 's property address which was originally reflected as 3581 Richland Avenue West in the initial Exhibit 102, is reported as 3553-3555 & 3601 Richland Avenue West. Asset number 15-004 's property address which was originally reflected as 1780 South Lake Drive in the initial Exhibit 102, is reported as 1788 & 1792 S. Lake Drive. Asset number 15-004 's property address which was originally reflected as 1871 Chamblee Tucker Road in the initial Exhibit 102, is reported as 1841,1851,1881, 1891 Chamblee Tucker Road. Asset number 15-006 's property address which was originally reflected as 3218-3294 South NC 87 Highway in the initial Exhibit 102, is reported as 3218-3294 North Carolina 87. Asset number 15-008 's property address which was originally reflected as 1541 Glenn School Road and 2237 East Geer Street in the initial Exhibit 102, is reported as 1517, 1533 & 1541 Glenn School Rd 2337 E Geer St. Asset number 15-009 's property address which was originally reflected as 4545 Fayetteville Road in the initial Exhibit 102, is reported as 1900-1970 &2000-3010 Club Pond Road. Asset number 15-011 's property address which was originally reflected as 2908 West U.S. 70 Highway in the initial Exhibit 102, is reported as 2912-2924 Us Hwy 70. Asset number 15-012 's property address which was originally reflected as 11652 Redbridge Boulevard in the initial Exhibit 102, is reported as 11652-11660 11620-11634 Red Bridge Road 1868 W Main Street. Asset number 18 's property address which was originally reflected as 7935-7955 Airport Road North in the initial Exhibit 102, is reported as 7935,7955,7941-7947 Airport Pulling Road N.. Asset number 21-006 's property address which was originally reflected as 529 Aldo Avenue in the initial Exhibit 102, is reported as 529-531 Aldo Avenue. Asset number 21-008 's property address which was originally reflected as 7051 Patterson Drive in the initial Exhibit 102, is reported as 7051-7061 Patterson Drive. Asset number 25-001 's property address which was originally reflected as 647-702 Commonwealth Drive in the initial Exhibit 102, is reported as 647-746 Commonwealth Dr. Asset number 33-001 's property address which was originally reflected as 1009, 1055, 1060, 1087, 1093, 1099 Commerce Park Drive in the initial Exhibit 102, is reported as 1009, 1055, 1060 Commerce Park Drive 1089, 1093, & 1099 Commerce Park Drive. Asset number 42 's property address which was originally reflected as 3800 West Broad Street in the initial Exhibit 102, is reported as 3709 & 3800 W. Broad Street. Asset number 45-001 's property address which was originally reflected as 238 and 242 East Main Street in the initial Exhibit 102, is reported as 238, 240, and 242 E Main Street. Asset number 45-002 's property address which was originally reflected as 53430 and 53460 North Carolina 12 Highway in the initial Exhibit 102, is reported as 0 NC Highway 12 53430 and 53460 NC Highway 12. Asset number 46 's property address which was originally reflected as 21 Lakefront Road in the initial Exhibit 102, is reported as 2 Lakefront Road aka 1932 US Highway #231. Item 2(d)(3) propertyCity Asset number 21-001's 417 and 433 W. 164th Street property city which was originally reflected as Carson in the initial Exhibit 102, is reported as Gardena. Asset number 46's property city which was originally reflected as Ozark in the initial Exhibit 102, is reported as Newton. Item 2(d)(5) propertyZip Asset number 5-005's 760 West 1000 North property zip which was originally reflected as 84337 in the initial Exhibit 102, is reported as 84057. Asset number 14-002's 2170 Coliseum Drive property zip which was originally reflected as 23666 in the initial Exhibit 102, is reported as 23466. Asset number 46's 21 Lakefront Road property zip which was originally reflected as 36360 in the initial Exhibit 102, is reported as 36352. Item 2(d)(5) propertyZip For the properties with zip codes reflecting less than five digits, the missing digit is a leading zero. Item 2(d)(6) propertyCounty Asset number 15-012's 11652 Redbridge Boulevard property county which was originally reflected as Stanley in the initial Exhibit 102, is reported as Cabarrus Item 2(d)(8) Net Rentable Square Feet Number For property types where the standard unit of measure is not square feet, this field is left blank. For mortgage loans that are part of a whole loan, net rentable square feet is presented for the entire mortgaged property that secures the whole loan, including one or more companion loans not included in the trust. Item 2(d)(9) Net Rentable Square Feet Securitization Number For property types where the standard unit of measure is not square feet, this field is left blank. For mortgage loans that are part of a whole loan, the net rentable square feet securitization number is presented for the entire mortgaged property that secures the whole loan, including one or more companion loans not included in the trust. Item 2(d)(10) Units Beds Rooms Number For mortgage loans that are part of a whole loan, the units beds rooms number relates to the entire mortgaged property that secures the whole loan, including one or more companion loans not included in the trust. Item 2(d)(11) Units Beds Rooms Securitization Number For mortgage loans that are part of a whole loan, the units beds rooms securitization number relates to the entire mortgaged property that secures the whole loan, including one or more companion loans not included in the trust. Item 2(d)(14) Valuation Securitization Amount For mortgage loans that are part of a whole loan, the valuation securitization amount relates to the entire mortgaged property that secures the whole loan, including one or more companion loans not included in the trust. Item 2(d)(20) Physical Occupancy Securitization Percentage The percentage of rentable space is determined based on the applicable unit of measurement provided in 2(d)(9) or 2(d)(11). Item 2(d)(25)(iii) Lease Expiration Largest Tenant Date With respect to Asset #9, the lease with the largest tenant has multiple expiration dates: 8/18/2026 with respect to 266,676 square feet; and 7/31/2034 with respect to 123,827 square feet. With respect to Asset #13, the lease with the largest tenant has multiple expiration dates: 4/30/2031 with respect to 4,950 square feet; and 7/31/2031 with respect to 4,950 square feet. Item 2(d)(28)(i) Financials Securitization Date For the mortgage loans identified as Rialto Industrial (Asset Number 2), IPG Portfolio (Asset Number 5), Orizon Aerostructures (Asset Number 7), Cadence (Asset Number 11), Societal CDMO (Asset Number 16), Walgreens Orlando Operations Center (Asset Number 24), and 800 Cesar Chavez (Asset Number 26), the Financials Securitization Date has been left blank as it was not available at the time of securitization. Item 2(d)(28)(iv) Revenue Securitization Amount For mortgage loans that are part of a whole loan, the revenue securitization amount is presented for the entire mortgaged property that secures the whole loan, including one or more companion loans not included in the trust. Item 2(d)(28)(vi) Operating Expenses Securitization Amount For mortgage loans that are part of a whole loan, the total underwritten operating expenses securitization amount are presented for the entire mortgaged property that secures the whole loan, including one or more companion loans not included in the trust. Item 2(d)(28)(viii) Net Operating Income Securitization Amount For mortgage loans that are part of a whole loan, the net operating income securitization amount is presented for the entire mortgaged property that secures the whole loan, including one or more companion loans not included in the trust. Item 2(d)(28)(x) Net Cash Flow Securitization Amount For mortgage loans that are part of a whole loan, the net cash flow securitization amount is presented for the entire mortgaged property that secures the whole loan, including one or more companion loans not included in the trust. Item 2(d)(28)(xv) Debt Service Coverage Net Operating Income Securitization Percentage For mortgage loans that are part of a whole loan, the debt service coverage net operating income securitization percentage is calculated based on the subject mortgage loan and any related pari passu companion loans not included in the trust, but without regard to any subordinate companion loans. Item 2(d)(28)(xvii) Debt Service Coverage Net Cash Flow Securitization Percentage For mortgage loans that are part of a whole loan, the debt service coverage net cash flow securitization percentage is calculated based on the subject mortgage loan and any related pari passu companion loans not included in the trust, but without regard to any subordinate companion loans. Item 2(e)(6) Servicer Trustee Fee Rate Percentage It should be noted that the rate presented consists of (i) the master servicing fee rate, which includes any primary servicing fee rate payable to an outside servicer (for a whole loan) or other primary servicer, and any subservicing fee rate, (ii) the certificate administrator / trustee fee rate payable to the certificate administrator and the trustee, (iii) the operating advisor fee rate, (iv) the asset representations reviewer fee and (v) the CREFC(R) intellectual property royalty license fee rate.