RMAN-05001: auxiliary filename /u01/oracle/oradata/wipd06.dbf conflicts with a file used by the target database

When performing duplication using RMAN I recieved the following message and duplication came out with errors.
On researching found that the values for parameters 'db_file_name_convert' and 'log_file_name_convert' was not set correctly.

The reasons being last time when duplication was performed the DBA used a different Database as source and the values for 'db_file_name_convert' and 'log_file_name_convert' were still pointing to the previous source database mount points.

So this time without checking or modifying the values the DBA started the duplication and received the above error message.

To fix it

Stop the database,change the values for 'db_file_name_convert' and 'log_file_name_convert' to the correct source Database values and then restart the duplication.