| MissingParameter | error |
| | Missing input file name |
| WrongInst | error |
| | Unknown instrument |
| FileMismatch | error |
| | Inconsistent number of input images |
| FileMismatch | error |
| | Inconsistent instruments or bands |
| FileMismatch | error |
| | # detector masks /= # instruments |
| FileMismatch | error |
| | Wrong detector mask |
| WrongType | error |
| | Input image has wrong type |
| WrongRefPixel | error |
| | Reference pixel is outside FOV |
| wrongParam | error |
| | ERROR in cut_radius |
| noPSF | error |
| | point response not valid |
| FileMismatch | warning |
| | Number of PI boundaries not equal number of images
corrective action: Use default values for missing boundaries |
| FileMismatch | warning |
| | Number of ECFs not equal number of images
corrective action: Use default values |
| MissingAttribute | warning |
| | Keyword is missing
corrective action: Keyword is not copied to output |
| WrongPointDir | warning |
| | Pointing direction is outside of image |
| BufferOverflow | warning |
| | More than 10000 sources detected
corrective action: Remaining sources will be ignored |