Oracle Message ORA-19726 - cannot plug data [string] at level string into database running at compatibility level string

ERRORcannot plug data [string] at level string into database running at compatibility level string
CAUSESome of the data in the pluggable set requires a compatibility level higher than what is currently allowed by the database. The string in square bracket is the name of the compatibility type associated with the data.
ACTIONRaise the compatible init.ora parameter and retry the operation.