After you have created an Application Data Model (ADM), the Source Database Status column can indicate Valid, Invalid, Needs Verification, or Needs Upgrade.
Invalid status–Verify the source database to update the referential relationships in the application data model with those found in the data dictionary, and to also determine if each item in the application data model has a corresponding object in the database.
Needs Verification status–You have imported an Oracle supplied template and you must verify the ADM before you can use it. This is to ensure that necessary referential relationships from data dictionary are pulled into the ADM.
Needs Upgrade status–You have imported a pre-12c masking definition, so you now need to upgrade the ADM.
To verify a source database:
Select the ADM to be verified, indicated with an Invalid status.
From the Actions menu, select Verify.
Select the source database with the Invalid status, then click Create Verification Job.
Specify job parameters in the Create Verification Job pop-up, then click Submit.
After the job completes successfully, click the source database and note the object problems listed.
Fix the object problems, rerun the Verification Job, then check that the Source Database Status is now Valid.
To upgrade an ADM:
Select the ADM to be upgraded, indicated with a Needs Upgrade status.
From the Actions menu, select Upgrade.
Specify job parameters in the Create Upgrade Job pop-up, then click Submit.
After the job completes successfully, check that the Source Database Status column now indicates Valid. If the column indicates Invalid, see the previous procedure.