Sage 100

Sage 100 Advanced 4.5 Sales journal posting in progress, error encountered Record '0021109' in SO_SalesOrderHeader.M4T is in use by another task. Update will continue to retry until record is available. Can't exit the error and no one else is in this company. What are my options? TIA

I logged out of Sage from the person with error and restarted posting and it worked.