-- If you look up the order in the database:
SELECT * FROM dbo.oms_wo_header
WHERE WONO = 'PKWO0042455'
AND WOVersion = 0
--Then pull out the information in the WOLocking column (see: <LockType>EDIT</LockType>)
<?xml version="1.0" encoding="utf-16"?>
<DataLocking xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<LockType>EDIT[</LockType>
<LockdByWSID>746</LockdByWSID>
<LockedByUserID>585</LockedByUserID>
<LockTimestamp>06/06/2017 08:11:51</LockTimestamp>
<LockTTL>0</LockTTL>
<LockComment />
</DataLocking>
--Then edit this xml, setting the <LockType>NONE
UPDATE dbo.oms_wo_header
SET WOLocking = '<?xml version="1.0" encoding="utf-16"?>
<DataLocking xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<LockType>NONE</LockType>
<LockdByWSID>746</LockdByWSID>
<LockedByUserID>585</LockedByUserID>
<LockTimestamp>06/06/2017 07:14:28</LockTimestamp>
<LockTTL>0</LockTTL>
<LockComment />
</DataLocking>'
WHERE WOType = 'PM_PK'
AND WONO = 'PKWO0042455'
AND WOVersion = 0
--Reopen the order and it will now be unlocked.