When searching for what appears to be a valid fare on EF, I received the following error:
The information could not be displayed because the Fare Basis code you selected is not valid for the specified date. To return only valid Fare Basis codes for the date specified, perform a Fare Information search with the Filter Results option set to Yes.
I don't see a "Filter Results" option that I can set to Yes; moreover, the fare seems to be valid as it prices out on the airline's own website. Could you explain what this error might mean?