CASSI1720S Requested SIT 'SIT-name' could not be found

An attempt to start a region with a specified SIT SIT-name was unsuccessful as the SIT was not found in the resource definition file.
System Action:
The region will not be started.
Make sure that the SIT is defined in the region's resource definitions. If the record does not exist then either request that the system administrator create the required SIT or use another one.
Console and standard error.