Invisible Record in Access Table

[elvanace]

I'm having a problem where I try to add a record to an Access table but I get the message that its already there (key violation). However, when I look for it, it can't be found. Also, if I try to run a delete query, its not found.

Can anyone help me?

 

[Golom]

What's the exact error message?

"Key violation" can mean quite a few things besides a duplicate key.