The present invention relates to a process for producing briquetted and pressed granular material and the use thereof for coloring building materials, such as concrete and asphalt, and organic media, such as paint systems, plastics and colored pastes. The method includes receiving a request for an operation, identifying the operation as part of a synchronised transaction that has not yet started, completing the operation, subsequently starting the synchronised transaction of which the completed operation is to be a part, and associating the completed operation with the synchronised transaction. The method includes, in the document handling device, determining a user identity and scanning a document to generate the electronic document.