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Validation rule "Require at least one of several fields" doesn't seem to work with Term reference fields that are using Autocomplete term widget. If you change widget to Select list, then it works nicely.
Comments
Comment #1
g089h515r806 CreditAttribution: g089h515r806 commentedyes, it is possible.
Comment #2
g089h515r806 CreditAttribution: g089h515r806 commentedYou could try it with "tid" colum instead of "value" column.
Term reference use "tid" as its column.
Comment #3
Alex72RM CreditAttribution: Alex72RM commentedThat's true... with an autocomplete widget the validation rule doesn't work, with tid or name the result is the same.
I have changed to select list and it works!
Comment #4
Alex72RM CreditAttribution: Alex72RM commented