| NoInsts | error |
| | At least one of mos1/mos2/pn file must be entered |
| eLowsGT2 | error |
| | Number of low energy bands can't exceed 2 |
| eHighGT2 | error |
| | Number of high energy bands can't exceed 2 |
| eLowsNEeHighs | error |
| | Number of low and high energy bands must be
equal |
| notM1M2PN | error |
| | Instrument is not M1, M2, or PN |