The reason you're seeing “The record you are looking for could not be found” is because the Basic Form in edit mode expects the record’s primary ID, not a custom field like AssetID.
To fix it, update your link to pass the actual record ID instead of AssetID. For example:
<a href="/edit-page?id={{ record.your_tableid }}">Edit</a>
Then, make sure your form is set to use id from the query string.
If you really need to use AssetID, you’d have to build a custom page that looks up the record by that field and loads the form manually but that’s more advanced.
Cheers 🎉