| WrongInst | error |
| | Unknown instrument ID |
| MissingParameter | error |
| | Missing input file name |
| FileMismatch | error |
| | Inconsistent number of input images |
| FileMismatch | error |
| | Inconsistent instruments or bands |
| FileMismatch | error |
| | Number of detector masks not equal number of instruments |
| MissingAttribute | warning |
| |
corrective action: Keyword will not be copied to output file |