document's update was terminated-please help

delivery document archived after creation

the error is comming like this

Update was terminated

-

Created Subrat Ranjan on 24.11.2007 12:02:30

Update was terminated

System ID.... NTD

Client....... 400

User..... SUBRATRANJAN

Transaction.. VL01N

Update key... A8335CBFD0174BAB95B7AFD4D817C6DE

Generated.... 24.11.2007, 12:02:30

Completed.... 24.11.2007, 12:02:30

Error Info... 00 671: ABAP/4 processor: SAPSQL_ARRAY_INSERT_DUPREC

please help

with hope

subrat