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Maros SitkoMaros Sitko 

insert vote object

Hi, I have issue with inserting vote object. My code in controller is

Vote newVote = new Vote(ParentId = articleId, Type = myvote);
insert newVote;
} catch(DmlException e) {
ApexPages.addmessage(new ApexPages.Message(ApexPages.Severity.WARNING, e.getMessage()));



and I get error

Insert failed. First exception on row 0; first error: DUPLICATE_VALUE, duplicate value found: <unknown> duplicates value on record with id: <unknown>: []



Any suggestion? Thank you

It would appear you've already voted on that record. That's what DUPLICATE_VALUE means.