E2845 Cmd Rej: ETT already mapped for LSN and IO specified

The mapping specified by the ett, lsn, and io parameters cannot already exist.

Recovery

1. Display a list of existing translation type maps. Enter the rtrv-ttmap command.
2. Revise the data as desired. Refer to the Database Administration - GTT User's Guide for assistance.
3. Re-enter the ent-ttmap command that generated this error message, specifying a valid combination of parameters.
   Contact My Oracle Support if this error message appears again. See My Oracle Support (MOS).