That's what help says:
Visual FoxPro was unable to successfully match a table with its database.
Use VALIDATE DATABASE to verify the links in the database.


>My data connection seems to run fine. Connect statement returns what appears to be a valid connection (1)
>
>When I run the sqlexec, return code indicates a problem & AERROR returns error 1526, '[ODBC FoxPro Driver]Cannot resolve backlink'
>
>Running VFP5, odbc VFP driver 6.01.8629.01, WIN2K.
>
>Any ideas? It was all working a few hours ago and I din't know what I did to break it.