Read events capturing parcel information as a parcel is transported through a facility is received, and a configuration file mapping readers capturing the read events to workspace locations within the facility is accessed. Utilizing the read events and configuration file, one or more locations are determined for a parcel being transported through a facility. The locations may form a most likely path, or sequence of locations, through the facility. The determined locations may be utilized for generating one or more graphical user interface elements for tracking parcel and/or other operational aspects. For example, a graphical user interface may indicate errors, such as errors in the parcel's path and slowdowns, detected from the read events. Additionally, volume of parcels over time may be determined from the read events. Further, a graphical user interface may indicate employee performance based on errors and/or read events attributed to the employee.