at the sfmt enter one of the following:
TNDN (this meens you will enter all the TNs and DNs for each set)
TN (You enter the TNs for each set and only the first DN. The system will then assign the rest of the DNs in numeric order.)
DN (You enter the first TN and the system enters the rest in TN order, you enter all the DNs)
Auto (you enter the first TN and DN, the system enters the rest in TN and numeric order)