D/P叫做付款交单,就是进口商付了货款以后代收行才会把相关的单证给你, D/A叫做承兑交单(一般会有个期限),就是进口商做向银行保证在多少天内会付款,银行就会给你提单了.
D/P Documents against Payment 付款交单D/A Documents against Acceptance 承兑交单D/P的安全度比D/A高