ORA-31525: could not find column string

admin

ORA-31525: could not find column string in CDC change table string.string
Cause: A column was missingfor an imported Change Data Capture change
table.
Action: It is likely thatthis table existed before the import operation and import
did not overwrite it. Determine whether the imported change table should
supercede the original table. If so, drop the original table and retry theimport. If
not, the change table must have a different name in order to be imported.