As far as i know:
I see you are taking drawing now.
And this message is not important for this activité.
It is looking a part at that adress.
You can show part that catia ask you. Push dest and show part. Maybe this can be succesfull to make it ok.
Maybe: I heard ghostlinks that document took. You can search ghost links problem solutions on google.
But if you are just taking drawing never mind message continue. This message iş not important.
Maybe you can find another solutions too.
Best regards
Mesut
And when this appear you really have a problem because CATDUAV is not always good to clean it... most probably you need to recreate the solid from scratch, keeping the same file (because most probably you need to keep the same UUID).
you might be able to find what is linked with the file by going Edit Links and see if one of the link is pointing to the file in the error message. Then take proper action: resolve the link to another file, isolate the link or simply delete the element source of the link.
After that I would CATDUA the drawing to make sure it's all clean.
Eric N. indocti discant et ament meminisse periti