The error 'An unknown error has occurred' when selecting contracts on the employee record indicates that the system hasn't linked the employee's personnel number to some of the background tables. To resolve this issue, follow the steps below.
Re-assign the employee's personnel access.
🤓Tip: Even if the access appears correct, disable and re-enable the user's Active toggles to reapply it.
Relink the portal account to the employee's personnel number.