Method comprising: - classifying shipments at least comprising classifying a shipment as not processable by a sorting facility, - wherein the shipment classified as not processable by the sorting facility is not processed by the sorting facility or at least not completely processed by the sorting facility, - wherein a processing by the sorting facility comprises a sorting of shipments which have been classified as being processable by the sorting facility, and the sorting facility is configured to automatically acquire respective data of shipments processed by it and, if the processed shipments are each provided with at least one item of information which characterizes, respectively, the processed shipments as shipments to be tracked, respectively at least one of these at least one item of information, - acquiring data of the shipment classified as not being processable by the sorting facility or obtaining acquired data of the shipment classified as not being processable by the sorting facility, wherein the shipment is provided with at least one item of information characterizing the shipment as a shipment to be tracked, and - generating at least one shipment tracking event concerning the shipment classified as not being processable by the sorting facility in a shipment tracking database, at least based on the acquired data, or outputting the acquired data for generating such a shipment tracking event, characterized - in that the classifying is upstream of the acquiring or obtaining, respectively, and - in that the acquiring or obtaining is triggered by a person during a manual sorting process of the shipment classified as not being processable by the sorting facility. - classifying shipments at least comprising classifying a shipment as not processable by a sorting facility, - wherein the shipment classified as not processable by the sorting facility is not processed by the sorting facility or at least not completely processed by the sorting facility, - wherein a processing by the sorting facility comprises a sorting of shipments which have been classified as being processable by the sorting facility, and the sorting facility is configured to automatically acquire respective data of shipments processed by it and, if the processed shipments are each provided with at least one item of information which characterizes, respectively, the processed shipments as shipments to be tracked, respectively at least one of these at least one item of information, - wherein the shipment classified as not processable by the sorting facility is not processed by the sorting facility or at least not completely processed by the sorting facility, - wherein a processing by the sorting facility comprises a sorting of shipments which have been classified as being processable by the sorting facility, and the sorting facility is configured to automatically acquire respective data of shipments processed by it and, if the processed shipments are each provided with at least one item of information which characterizes, respectively, the processed shipments as shipments to be tracked, respectively at least one of these at least one item of information, - acquiring data of the shipment classified as not being processable by the sorting facility or obtaining acquired data of the shipment classified as not being processable by the sorting facility, wherein the shipment is provided with at least one item of information characterizing the shipment as a shipment to be tracked, and - generating at least one shipment tracking event concerning the shipment classified as not being processable by the sorting facility in a shipment tracking database, at least based on the acquired data, or outputting the acquired data for generating such a shipment tracking event, - in that the classifying is upstream of the acquiring or obtaining, respectively, and - in that the acquiring or obtaining is triggered by a person during a manual sorting process of the shipment classified as not being processable by the sorting facility.