When printer is powered off by user or power failure during label printing.
Since the Apollo writes the serial number to the card each time a label is printed, chances are very good the file will be open alot. If a user has to stop the batch from printing, they should pause the printer and press cancel. Powering off the printer can cause corruption of the serial file on the memory card. The printer can also be placed on a UPS to avoid corruption from a power loss. With a UPS the user could pause the printer, cancel the job and power down the printer.