ServiceDeskPlus: Unable to update user logged ticket?

ServiceDeskPlus: Unable to update user logged ticket?

Dear ServiceDesk Support,

We are using ServiceDeskPlus8 for more than 3 years...
This morning user logged a tiket 15657 and ours helpdesk agent found unable to update the tickets, please refer to attachment for more info...

Please help to advise the root cause, fixing and how to prevent this in future...

Let me know if any further information requires.

Thanks!

Regards,
gary












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