...- Morgan Stanley Capital I Trust 2021-230P is a U.S. CMBS transaction backed by a floating-rate, interest-only mortgage loan secured by 230 Park Ave., an office property in the Grand Central office submarket of midtown Manhattan. - We affirmed five ratings from the transaction. - The affirmations reflect our view of the credit characteristics and performance of the sole loan in the pool, the transaction's structure, and the liquidity available to the trust, among other factors. NEW YORK (S&P Global Ratings) July 14, 2023--S&P Global Ratings today affirmed its ratings on five classes of commercial mortgage pass-through certificates from Morgan Stanley Capital I Trust 2021-230P (see ratings list). This U.S. stand-alone (single-borrower) CMBS transaction is backed by a floating-rate, interest-only (IO) mortgage loan secured by the borrower's fee simple interest in 230 Park Ave., also known as the Helmsley Building, a 1.39 million-sq.-ft., 34-story office tower in the Grand Central office submarket...