35 ILCS 200/20-60
At the time of making return to the county collector, each township collector shall make out and deliver to the county collector a detailed statement, in writing, of the amount of taxes paid under protest and the amount of taxes he or she has been unable to collect on property, the same as in the tax books delivered to him or her by the county clerk, and shall show the property index number, or the number of the page of the tax book and the number of the line of the page to identify the item that appears to be delinquent. When no taxes have been paid on any one page on the collector's book, the page footings of the taxes on such page may be copied into the statement. It is not necessary to give in the statement the description of the delinquent property, nor the names of the owners. The township collector shall add up the delinquent taxes in the statement, and make a summary thereof, setting forth the aggregate amount of tax and the total delinquent, in the same manner as in his or her warrant, and shall make oath that the statement is true and correct. At the time of making the final settlement the township collectors shall pay over to the county collector all taxes paid to them under protest.
35 ILCS 200/20-60