PDR1350S
The Sortmatch group <SORT> tag fieldname1 is not defined for input fieldname2 .
What happened: You specified a field to sort by that was not used in one of the inputs you are sorting. fieldname1 identifies the unused field and fieldname2 indicates the fieldname of the input being sorted.
What to do: Define the field identified by the <SORT> tag fieldname value in each Input group to be sorted; or remove the indicated <SORT> tag from the Sortmatch group.