When attempting to configure the Data Store, there is an error registering the Data Store with the error message:
"Attempt to Configure Data Store Failed. Caused by null"
This issue may be encountered when a Data Store that has been previously registered must be re-registered.
Note: It is strongly recommended to backup your data before proceeding.
Check the arcgisdatastore/etc folder. If there is a relational-config.json or tilecache-config.json file: