Yes definitely, it is now possible to change a registration even if it has already been processed on your salary.
How far back in time can I go?
You can change a registration, depending on the mobility policy, up to a number of days in the past.
Registrations that have yet to be approved by HR or a manager can also be changed to another budget or deleted.
How do I update a registration?
Go to the ‘registrations’ tab in NS Go.
View this month's registrations in the ‘Overview’.
Click on the registration you want to change.
Choose ‘edit’ to change the budget, or ‘delete’ to remove the registration.
Registrations awaiting approval can be found under the ‘pending’ tab. Here you can follow the same steps to edit or delete a registration.
You can change your registrations several days back in time. Exactly how long this can be done depends on your organisation's mobility policy.
For an explanation on how to add a new registration, consult this link.