Error message when i try to update references from X7


I try to update reference from ENDnote 7, but  it’s doesn’t work anymore, i receive the following message:

“We were unable to find a reliable match for this record There were either no records found or mulitple possibilities found.”   Any idea how to solve this ?

More infomation can be found in the attachment.

In advance i thank you for your help.


The name of the just the PDF in <> is not enough for Endnote to recognize the record to update.