During an export or database backup, a volume cannot be used because it is already defined in a storage pool, or has already been used by the current operation, or has been previously used by an export or database backup operation (as recorded in the volume history) or is in use by another process.
The operation continues and the volume is skipped.
Use the QUERY VOLUME command to display the names of volumes that are defined to server storage pools. Use the QUERY VOLHISTORY command to display the names of volumes that have been used for export or database backup operations. If no volume names are displayed using the query commands described above, ensure that the volume identified in this message has not been specified or used more than once in the operation being performed.