Hi,
Please use the following code to create voucher:
numberSeq = NumberSeq::newGetVoucherFromId(projJournalTable.VoucherNumberSequenceTable, false);
projJourTrans.Voucher = numberSeq.voucher();
Source:
(Import Hour Journal using X++ code in Ax 2012)
axgenius.blogspot.com/.../import-hour-journal-using-x-code-in-ax.html