Operating method for a rolling mill, - wherein several first flat items of rolling stock made of metal are fed in succession to a number of roll stands (1, 2) of the rolling mill via a first feed path, - wherein the first flat items of rolling stock are rolled by means of the number of roll stands (1, 2), - wherein the respective first flat item of rolling stock is firstly roughed down in the number of roll stands (1, 2) in at least one roughing pass with a first wedge setting (ds) and is then finish-rolled in finishing passes, - wherein after the finish-rolling of the respective first flat item of rolling stock a first thickness wedge (dd) existing in the finish-rolled respective first flat item of rolling stock is registered by applied metrology, - wherein the first thickness wedge (dd) existing in the finish-rolled respective first flat item of rolling stock is compared with a first target wedge (dZ), - wherein on the basis of a deviation of the existing first thickness wedge (dd) from the first target wedge (dZ) and from the first wedge setting (ds) a new first wedge setting (ds) for the at least one roughing pass is ascertained and - wherein the first wedge setting (ds) in the course of the at least one roughing pass is adjusted, in accordance with the newly ascertained value of the first wedge setting (ds), for the first flat item of rolling stock to be rolled next, so that the first flat item of rolling stock to be rolled next is roughed down in the at least one roughing pass with the newly ascertained value of the first wedge setting (ds), characterized - in that, during the roughing down of the respective first flat item of rolling stock in the roll stand carrying out the at least one roughing pass, lateral guides and/or edgers are placed against the rolling stock in front of and/or behind this roll stand, - in that the lateral guides and/or edgers exert transverse forces (FE, FA) on the respective first flat item of rolling stock, which prevent a saber-type formation in the course of roughing down, and - in that a change (dds) of the wedge setting (ds) is proportional to the thickness wedge (dd) existing in the finish-rolled respective first flat item of rolling stock. - wherein several first flat items of rolling stock made of metal are fed in succession to a number of roll stands (1, 2) of the rolling mill via a first feed path, - wherein the first flat items of rolling stock are rolled by means of the number of roll stands (1, 2), - wherein the respective first flat item of rolling stock is firstly roughed down in the number of roll stands (1, 2) in at least one roughing pass with a first wedge setting (ds) and is then finish-rolled in finishing passes, - wherein after the finish-rolling of the respective first flat item of rolling stock a first thickness wedge (dd) existing in the finish-rolled respective first flat item of rolling stock is registered by applied metrology, - wherein the first thickness wedge (dd) existing in the finish-rolled respective first flat item of rolling stock is compared with a first target wedge (dZ), - wherein on the basis of a deviation of the existing first thickness wedge (dd) from the first target wedge (dZ) and from the first wedge setting (ds) a new first wedge setting (ds) for the at least one roughing pass is ascertained and - wherein the first wedge setting (ds) in the course of the at least one roughing pass is adjusted, in accordance with the newly ascertained value of the first wedge setting (ds), for the first flat item of rolling stock to be rolled next, so that the first flat item of rolling stock to be rolled next is roughed down in the at least one roughing pass with the newly ascertained value of the first wedge setting (ds), - in that, during the roughing down of the respective first flat item of rolling stock in the roll stand carrying out the at least one roughing pass, lateral guides and/or edgers are placed against the rolling stock in front of and/or behind this roll stand, - in that the lateral guides and/or edgers exert transverse forces (FE, FA) on the respective first flat item of rolling stock, which prevent a saber-type formation in the course of roughing down, and - in that a change (dds) of the wedge setting (ds) is proportional to the thickness wedge (dd) existing in the finish-rolled respective first flat item of rolling stock.