Is it possible to define own values for the UTSTATUS, delete not needed ones or adjust the existing ones?
Adding or deleting values for the UTSTATUS is not allowed. This applies to the catalog table UT_C_OBJECT_STATUS as well as to the Esri domain "UT_Status". If status values are not required, a display of the status values when selecting new status values can be hidden by configuring UT_STATE_TRANSITIONS accordingly so that they are not visible to the user.
Changing existing status values is only allowed while retaining the existing semantics, for example for translations into other languages or familiar terminology in your own organisation.