NOTTOEOFONPUT, Not positioned to EOF on write (sequential organization only)
Run Time Error: This indicates that a WRITE command attempted to update a sequential disk file that was not positioned to end-of-file (EOF).
Action: Read to end-of-file or OPEN the file with the APPEND deviceparameter if you want to add to the file. If you need a fresh copy of the file, OPEN it with the NEWVERSION deviceparameter.