You use authorization objects to control the functions each user can perform.
CRM_IUDIT
is the authorization object for Utilities Data Import Tool (DIT).
ACTVT
provides users authorization to use the DIT application. It also provides authorization to run the deletion report.
IUDIT_APPL
provides users authorization to maintain the application to be used for data import.
For documentation related to authorization objects, use transaction SU21
.