I use getFiltersAsync() to get a list of filters that the worksheet has.
It reports that it has filters named ShipTo_State and Shipto_Cty.
Right after that, I call applyFilterAsync to apply a value to each of those filters (I call once for each filter).
I get an invalidFilterFieldName error back from the worksheet.
Another guy maintains the worksheets, so I'm not sure how they are set up, but is there anything obvious we need to check to see why this is failing?