Method for assembling a system comprising a first and a second wall formwork (1, 2, 3, 40) and an anchor system, comprising the steps: the two wall formworks (1, 2, 3, 40) are set up opposite one another, an anchor rod having a grid spacing at a first end and a thread at the other second end is pushed through anchor rod bores of the two wall formworks (1, 2, 3, 40) in such a way that the first end of the anchor rod not pushed through the anchor rod bores has the grid spacing, the second end with the thread of the anchor rod pushed through the anchor rod bores is connected by screwing, at a position predetermined by a stop, to a locking device, which is present on the rear side of the second wall formwork and is fixedly mounted, namely fixed on the rear side to a supporting element of said second wall formwork with a fastening device, the predetermined position of the anchor rod being reached when the second end of the anchor rod pushed through reaches the stop, this stop preventing the anchor rod from being screwed in further, the first end with the grid spacing of the anchor rod, which is not pushed through the anchor rod bores, is connected to a locking device (5, 6, 7, 8, 13, 14, 15) provided here in such a way that this connection is aligned with the selected grid spacing, the locking device (5, 6, 7, 8, 13, 14, 15) aligned with the grid spacing is connected to the adjacent first wall formwork (1, 2, 3), namely fixed to a supporting element of the first wall formwork (1, 2, 3) by means of a fastening device, wherein a part of the locking device (5, 6, 7, 8, 13, 14, 15) aligned with the grid spacing is connected to the anchor rod when the anchor rod is pushed through the anchor rod bores and said part comprises a control element, wherein the control element is part of the locking device (5, 6, 7, 8, 13, 14, 15) aligned with the grid spacing, the control element being positioned in accordance with the grid spacing by a further stop, the control element being a sleeve through which the anchor rod is inserted, characterized in that the grid spacing is formed by a plurality of grooves, wherein a wall region of the further stop extends into a corresponding groove and the further stop is held in its intended position such that it serves as a stop for the control element. the two wall formworks (1, 2, 3, 40) are set up opposite one another, an anchor rod having a grid spacing at a first end and a thread at the other second end is pushed through anchor rod bores of the two wall formworks (1, 2, 3, 40) in such a way that the first end of the anchor rod not pushed through the anchor rod bores has the grid spacing, the second end with the thread of the anchor rod pushed through the anchor rod bores is connected by screwing, at a position predetermined by a stop, to a locking device, which is present on the rear side of the second wall formwork and is fixedly mounted, namely fixed on the rear side to a supporting element of said second wall formwork with a fastening device, the predetermined position of the anchor rod being reached when the second end of the anchor rod pushed through reaches the stop, this stop preventing the anchor rod from being screwed in further, the first end with the grid spacing of the anchor rod, which is not pushed through the anchor rod bores, is connected to a locking device (5, 6, 7, 8, 13, 14, 15) provided here in such a way that this connection is aligned with the selected grid spacing, the locking device (5, 6, 7, 8, 13, 14, 15) aligned with the grid spacing is connected to the adjacent first wall formwork (1, 2, 3), namely fixed to a supporting element of the first wall formwork (1, 2, 3) by means of a fastening device, wherein a part of the locking device (5, 6, 7, 8, 13, 14, 15) aligned with the grid spacing is connected to the anchor rod when the anchor rod is pushed through the anchor rod bores and said part comprises a control element, wherein the control element is part of the locking device (5, 6, 7, 8, 13, 14, 15) aligned with the grid spacing, the control element being positioned in accordance with the grid spacing by a further stop, the control element being a sleeve through which the anchor rod is inserted, characterized in that the grid spacing is formed by a plurality of grooves, wherein a wall region of the further stop extends into a corresponding groove and the further stop is held in its intended position such that it serves as a stop for the control element.