Picking Request number
I'm a SAP SD beginner. I have some question about SD document flow as following,
sale order xxxxxxxxxx
. delivery xxxxxxxxxx
.. picking request 20080808
As you see the picking request no. is generated when picking the delivery with both t.code VL02n or VL70
- vl02n -> the number is system date.
- vl70 -> is sequence number.
I just want to know that, where in SAP, does this picking request no. keep in,
Is there any table (except table VBFA) structure ?
Is there a relationship between delivery and picking request ?
Thanks in advance