Method for operating a system for transforming plastic parisons into plastic containers, wherein the system has a carrier on which a plurality of transforming stations (8a, 8b,...8h) is arranged and each of these transforming stations (8a, 8b,... 8h) has at least one handling element (12a, 12b,... 12h) for handling the plastic parisons, comprising the steps of: - loading the individual transforming stations (8a, 8b,... 8h) in a first loading configuration, wherein a specific handling element (12a, 12b,... 12h) is assigned to each transforming station (8a, 8b,... 8h); - detecting at least one physical characteristic which is characteristic for the transformation of the plastic parisons or for the transformed containers, wherein the physical characteristic is detected within the scope of the first loading configuration; - loading the individual transforming stations (8a, 8b,... 8h) in a second loading configuration, wherein at least one specific handling element (12a, 12b,... 12h) is assigned to each transforming station (8a, 8b,... 8h), and wherein the second loading configuration differs from the first loading configuration in such a way that within the scope of the second loading configuration at least one handling element (12a, 12b,... 12h) is assigned to a different transforming station than within the scope of the first loading configuration; - detecting at least one physical characteristic which is characteristic for the transformation of the containers or for the transformed containers, wherein the physical characteristic is detected within the scope of the second loading configuration, characterised in that the physical characteristic detected within the scope of the first loading configuration is compared with the physical characteristic detected within the scope of the second loading configuration, or at last one physical characteristic detected within the scope of a loading configuration (K1, K2) is compared with a reference characteristic, and a state of the system can be inferred from the comparison of the physical characteristic included in a loading configuration (K1, K2) with a reference characteristic and/or the physical characteristic included in the further loading configuration (K2, K1). - loading the individual transforming stations (8a, 8b,... 8h) in a first loading configuration, wherein a specific handling element (12a, 12b,... 12h) is assigned to each transforming station (8a, 8b,... 8h); - detecting at least one physical characteristic which is characteristic for the transformation of the plastic parisons or for the transformed containers, wherein the physical characteristic is detected within the scope of the first loading configuration; - loading the individual transforming stations (8a, 8b,... 8h) in a second loading configuration, wherein at least one specific handling element (12a, 12b,... 12h) is assigned to each transforming station (8a, 8b,... 8h), and wherein the second loading configuration differs from the first loading configuration in such a way that within the scope of the second loading configuration at least one handling element (12a, 12b,... 12h) is assigned to a different transforming station than within the scope of the first loading configuration; - detecting at least one physical characteristic which is characteristic for the transformation of the containers or for the transformed containers, wherein the physical characteristic is detected within the scope of the second loading configuration,