| noComponents | error | |
| The list fitsets is empty. | ||
| inconsistentComponents | error | |
| A pair of fitsets component images was found with differing dimensions. | ||
| badComponentDimensions | error | |
| The dimensions of the components fitsets are not the same as those of poissonset. | ||
| badMaskDimensions | error | |
| The dimensions of maskset are not the same as those of poissonset. | ||
| negativePoissonValues | error | |
| Some of the pixels of poissonset have negative values. | ||
| negativeValuesModelImage | error | |
| One of the model components has some negative-valued pixels. | ||
| modelImageAllZero | error | |
| One of the model components has been found with all zero pixel values. | ||
| maskImageAllFalse | error | |
| No true-valued mask pixels were found. | ||
| imagesTooSimilar | error | |
Two of the model components have been found to be too similar (ie,  for this pair exceeds the maximum permitted value). See section 3.2.1. | ||
| badFitStyle | error | |
| The value of fitstyle was not recognized. | ||
| wrongNumCoeffs | error | |
| The number of elements in the list initcoeffs was not the same as the number in the list fitsets. | ||
| badLuSolveExitStatus | error | |
| The ssclib
routine solveLinearEquations exited with a non-zero status, which indicates an error. | ||
| fitIsDiverging | warning | |
| The fitting routine is no longer converging.
corrective action: The fitting routine terminates. | ||
| maxIterationsExceeded | warning | |
| The fitting routine has exceeded a set maximum number of iterations without achieving the convergence criterion.
corrective action: The fitting routine terminates. | ||
| zeroChiSquared | warning | |
|
corrective action: The best-fitting chi-square value is zero, which in practice should never happen for the real data. | ||
