code: private AccountReport22 createDay(BTag tag) throws Exception {
          AccountReport22 report = new AccountReport22();
  
          if (tag != null) {
              report.getBal().add(this.createSaldo(tag.start, true));
              report.getBal().add(this.createSaldo(tag.end, false));
          }
  
          if (tag != null && tag.my != null) {
              CashAccount36 acc = new CashAccount36();
              AccountIdentification4Choice id = new AccountIdentification4Choice();
              id.setIBAN(tag.my.iban);
              acc.setId(id);
  
              acc.setCcy(tag.my.curr);
  
              BranchAndFinancialInstitutionIdentification5 svc = new BranchAndFinancialInstitutionIdentification5();
              FinancialInstitutionIdentification8 inst = new FinancialInstitutionIdentification8();
              svc.setFinInstnId(inst);
              inst.setBICFI(tag.my.bic);
              report.setAcct(acc);
          }
  
          return report;
      }
docs: Erzeugt den Header des Buchungstages.
  
  @param tag der Tag.
  @return der Header des Buchungstages.
  @throws Exception