A method for assigning a processing plan to a mobile unit data set of a mobile unit of an indoor location system of a manufacturing hall is provided. The method includes: providing a manufacturing control system for industrial processing of workpieces with a machine tool in accordance with workpiece-specific processing plans, each processing plan storing order information for a workpiece to be processed, providing a mobile unit with an image acquisition unit for acquiring image data, mobile unit data set belonging to the mobile unit and position data of the mobile unit acquired with the indoor location system being stored in the manufacturing control system, acquiring image data of a processing plan-specific object for identifying the processing plan to be assigned with the manufacturing control system, and assigning the identified processing plan to the mobile unit data set of the mobile unit in the manufacturing control system.