We found significant data missing in some of the reports. The FACTS tables do not have most of the data. The jobs run as expected.
The times between Database and Application are mismatched by more than 15 sec.
This can be seen in Administration - Health Report - Database
Parameter Application and Database Timezone Match
This parameter should indicate red if over 15sec, and so far it doesn't, this is logged as DE48031
Release: CODFSS99000-15.4.1-PPM SAAS FedRAMP-Sandbox-Small Environment
Ensure that the time/date between Application server and Database server is the same up to the second.
If you are using a time sync service to sync the server to the correct time, ensure the service is up and running.
Once the times are synced up, run Load Data Warehouse - Full Load and check the data again.
More detail and discussion in Communities thread: