Workitem - Link attached is not working

Hi,

I have a decision task containing a link to display scheduling agreement(via binding of &_ADHOC_OBJECT&).

For certain users, the link is not working. There's no response upon clicking the link.

What makes me wonder is that I have another workflow with a similar decision task which is having a link to display PO.

And it works for all users.

It's highly possible that this problem is caused by user authorization but I would like to know other plausibilities

If you have encountered this problem before, please share your solution/thoughts.

Thanks,

Jeff