VOTXN: Text copied from VD53 to VL01N

Hello experts,

At VOTXN, I maintained Access Sequences for delivery item. For example, at the Access Sequence for Text ID's, I first imported VBBP as object, z801 as ID, and so on; for the second sequence, KNMT as object z001 as ID. When I create a delivery document(VL01N), the long text at VD53 should be copied to corresponding field at VL01N. As to documents whose sold-to party differs from ship-to party, the texts cannot be copied from VD53; but as to the ones without such difference, the long texts can be copied to VL01N. I want to know how to configure it.

BTW, I learnt from SAP notes that SAP use sold-to part as a link between VD53 and SD documents. Can you please elaborate this? Thanx.

Best regards

ts