Oracle Message ORA-24027 - AQ HTTP propagation encountered error, status-code string, string

ERRORAQ HTTP propagation encountered error, status-code string, string
CAUSEAQ propagations HTTP request to the propagation servlet at the specified address encountered an error
ACTIONSpecify a valid address in the connect string of the propagation destination dblink, the dblink user has the correct permissions, check if the AQ propagation servlet was properly installed.