Method and production system for producing and/or packaging cigarettes

A method for producing and/or packaging products, namely cigarettes, in a production and/or packaging system, comprising:

• feeding packaging units from a lower packaging level (15) to at least one production unit (13) of the system, wherein the at least one production unit (13) packages said packaging units in associated packaging units from a higher packaging level (14), whereby the packaging units from the higher level (14) each comprise at least one of the packaging units from the lower level (15);
• recording, with a camera (20g), images of the packaging units from the lower level (15) that are to be fed, or have already been fed, to the at least one production unit (13);
• recording, with a camera (20f, 20m), images of the packaging units from the higher level (14) that are respectively assigned to the packaging units from the lower level (15);
• and
• assigning a common identifier to the recorded images (41, 42) of the associated packaging units from the higher level (14) and form the lower level (15).