A surveying system for marking a target (30a, 30b, 31, 32, 33, 35a, 35b) that is known in a coordinate system, having a mobile marking unit and a geodetic surveying appliance, particularly for determining the position of the marking unit, wherein • the marking unit is configured such that a marking unit position for the marking unit can be determined with high precision, particularly wherein the marking unit has a measurable reflector and/or a GNSS antenna for determining the marking unit position, and • the surveying appliance at least has ▪ a targeting unit that defines a targeting direction, particularly a telescope, ▪ an angle measuring functionality and ▪ a camera for capturing a camera image, and also having • a target position - stored in a database - for the target (30a, 30b, 31, 32, 33, 35a, 35b), • an output unit, particularly a display, on which the camera image, particularly together with the target position and/or the marking unit position, can be presented and • a control and processing unit, characterized in that the surveying system has a presentation functionality that, when the presentation functionality is executed under the control of the control and processing unit, involves a spatial discrepancy between the marking unit position and the target position being graphically presented on the output unit • in a first direction by means of a first discrepancy indicator (15, 17, 19), wherein the first discrepancy indicator (15, 17, 19) indicates a distance along the first direction between the target position and a plane defined by the surveying appliance and the marking unit, and • in a second direction by means of a second discrepancy indicator (16, 18, 19), wherein the second discrepancy indicator (16, 18, 19) indicates a distance along the second direction between the target position and a normal to the plane, which normal is stipulated by the marking unit position, wherein the discrepancy in the first direction is presented independently of the discrepancy in the second direction. • the marking unit is configured such that a marking unit position for the marking unit can be determined with high precision, particularly wherein the marking unit has a measurable reflector and/or a GNSS antenna for determining the marking unit position, and • the surveying appliance at least has ▪ a targeting unit that defines a targeting direction, particularly a telescope, ▪ an angle measuring functionality and ▪ a camera for capturing a camera image, ▪ a targeting unit that defines a targeting direction, particularly a telescope, ▪ an angle measuring functionality and ▪ a camera for capturing a camera image, • a target position - stored in a database - for the target (30a, 30b, 31, 32, 33, 35a, 35b), • an output unit, particularly a display, on which the camera image, particularly together with the target position and/or the marking unit position, can be presented and • a control and processing unit, • in a first direction by means of a first discrepancy indicator (15, 17, 19), wherein the first discrepancy indicator (15, 17, 19) indicates a distance along the first direction between the target position and a plane defined by the surveying appliance and the marking unit, and • in a second direction by means of a second discrepancy indicator (16, 18, 19), wherein the second discrepancy indicator (16, 18, 19) indicates a distance along the second direction between the target position and a normal to the plane, which normal is stipulated by the marking unit position,