Link document FI

Hi,

Is there an transaction or an program to delete the link between an document of FI (create by trx FB60) and external system to store documents ?

Example:

If you do trx FB03 to document overview, you click System – Links, then you see the link with the external system. There is possible visualize the image/file PDF on the the external system.

But to delete only the link (because the link is wrong, but not it’s important) ?

I would’ like delete only the link.

Is there transaction or program to do it on the release 4.6B ?

Any assistance would be greatly appreciated.