error Content for element Serv is incomplete According to the DTD/Schema

Question

Good morning, I’m trying to send a note, but it’s catching up with the following message:

Content for element Serv is incomplete According to the DTD/Schema. Expecting: vServ.

the part where I create the tag

      Qi.First;
      while not Qi.Eof do
      begin
        AServico               := Servico.ItemServico.New;
        AServico.CodServ       := IntToStr(Qi.GetInteger('mpsd_codprodserv'));
        AServico.Descricao     := Qi.GetString('Mpsd_DescProdServ');
        AServico.Quantidade    := Qi.GetFloat('Qtde');
        AServico.ValorUnitario := Qi.GetFloat('Mpsd_VlrUnit');
        Qi.Next;
      end;

Could you help me in what is missing? I have sought in several places a solution and I have not succeeded