Service order history data (tracability)

Hello eveyrone,

I have a question.

When we assign a service order to a team or technician in particular in SAP S/4 HANA, we realize that we made a mistake. Is there a way to modify the technician and have a traceability of it ?

I there a way to know that the unassignment has been done? By who and at what time ?

Thank you very much for your time and help.