The fitted polynomial has been rejected due to an excessive RMS deviation measure.
Usually the rejection will be valid and the program will proceed to locate a better set of identifications. However, if looking at the other orders it is determined that this identifications was likely to be correct for the order, then ech_idwave should be used in manual mode. Specifying an appropriate search range for the order and using the AI option will let the program relocate the set of identifications it rejected when running automatically. The set can then be accepted and interactively improved by adding or removing individual line identifications.
Martin Clayton