| ERROR | warning: region store serial number reduced from number to number |
| CAUSE | An informational message written to the log file when the server finds the region database has its serial number set lower than it was when the server previously loaded the region data. This is an unnatural condition- every update to the region should increment the serial number so a reduction of the serial number might reflect tampering or accidental manual alteration this and possibly other region tables. |
| ACTION | Administrators should find out how/why the serial number decreased. |