Can't Approve Incomplete transaction

Hi Team,

There is an employee have incompleted transaction, then we change the username and also the worker e-mail.

When logged in to the system with the new username and try to process the incompled transaction then showing the error.

We have workaround for the error, that user should be reassign to the approver that not yet do the action.

The questions, and for your information we change the username and change worker e-mail for all employee, then is there any other workaround for this ? is like bulk reassign or anything ?

because if we need reassign one by one, this is wasting time to do it.