If you get the following error when searching for a transaction or opening a transaction screen, the most common reason is that there is a non-numerical ticket number in the system.
To resolve this issue, alphanumeric ticket numbers must be enabled:
Hover over Administration
Click Settings
Click General
Click Ticket
Enable Setting: Ticket No is Alphanumeric
Click Save
If this is already enabled or does not resolve the problem, please raise a support case quoting this article title, and we will investigate further.