ORA-31523: could not find change source string for CDC change set string
Cause: The change source was missing for an imported Change Data Capture change set.
Action: Drop the imported change set because it is invalid. Verify that the schema containing the missing change source was included in the original export. If needed, perform the export again, including the schema of the missing change source.
ORA-31524
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ORA-31523could not find change source string for CDC change set string