The dataset cannot be deleted. Common causes include the following:
- The coverage is locked by another application. For instance, trying to overwrite a coverage in ArcCatalog while the coverage is being used in ArcMap.
- File permissions are set on some or all the files that compose the coverage.
If other applications (ArcMap, ArcCatalog, Python) are accessing the same coverage, close them or close and refresh the workspace, as locks are applied when data is read. Also check file permissions for the coverage folder and its files and reset if necessary.