A sliding-pivoting mechanism of a shelf of a piece of furniture or domestic appliance for pulling out and lifting the shelf from a body of the piece of furniture or a useful space of the domestic appliance, especially a dishwasher, comprising - a first pivot arm which is rotatably fixed to at least one of the side walls of the furniture body or the useful space with a first end parallel to the plane of the side walls, - a second pivot arm which is rotatably fixed to at least one of the side walls of the furniture body or the useful space with a first end parallel to the plane of the side walls, - wherein the pivot arms (15, 16) are arranged in parallel and at a distance from each other, - wherein a guide rail is pivotably fastened to the respective second ends of the pivot arms (15, 16) parallel to the plane of the side walls in such a way that the guide rail can be pivoted from a bottom position within the furniture body or the useful space to a lifted, upper position at least partly outside the furniture body or the useful space, - at least one running rail which is linearly displaceable in the guide rail and on which the shelf is fixed, - wherein the sliding-pivoting mechanism comprises a locking mechanism, which is arranged on the guide rail and on one of the pivot arms (15, 16) and can be actuated by an activator fixed to the running rail, for preventing a pivoting movement of the sliding-pivoting mechanism in a lifted and a lowered end position, characterized in that - a support element is arranged in a stationary manner on the first pivot arm, which support element interacts with a guide bevel of the activator and with which the locking mechanism can be moved during lifting of the sliding-pivoting mechanism to a locking position which secures the lifted end position, wherein one end of the guide bevel of the activator which is disposed at the front in the pull-out direction is formed as a limit stop. - a first pivot arm which is rotatably fixed to at least one of the side walls of the furniture body or the useful space with a first end parallel to the plane of the side walls, - a second pivot arm which is rotatably fixed to at least one of the side walls of the furniture body or the useful space with a first end parallel to the plane of the side walls, - wherein the pivot arms (15, 16) are arranged in parallel and at a distance from each other, - wherein a guide rail is pivotably fastened to the respective second ends of the pivot arms (15, 16) parallel to the plane of the side walls in such a way that the guide rail can be pivoted from a bottom position within the furniture body or the useful space to a lifted, upper position at least partly outside the furniture body or the useful space, - at least one running rail which is linearly displaceable in the guide rail and on which the shelf is fixed, - wherein the sliding-pivoting mechanism comprises a locking mechanism, which is arranged on the guide rail and on one of the pivot arms (15, 16) and can be actuated by an activator fixed to the running rail, for preventing a pivoting movement of the sliding-pivoting mechanism in a lifted and a lowered end position, - a support element is arranged in a stationary manner on the first pivot arm, which support element interacts with a guide bevel of the activator and with which the locking mechanism can be moved during lifting of the sliding-pivoting mechanism to a locking position which secures the lifted end position, wherein one end of the guide bevel of the activator which is disposed at the front in the pull-out direction is formed as a limit stop.