This industry comprises establishments primarily engaged in providing one or more of the following: (1) financial transaction processing (except central bank); (2) reserve and liquidity services (except central bank); and/or (3) check or other financial instrument clearinghouse services (except central bank). Establishments primarily engaged in nonfinancial data and electronic transaction processing are classified in Industry Group 5182, Data Processing, Hosting, and Related Services; and Establishments of the central bank primarily engaged in check clearing and other financial transaction processing are classified in Industry 521110, Monetary Authorities-Central Bank.