Restoring an rdsadmin_rman_util tablespace backup for Oracle

Hi All,

I am having trouble restoring a tablespace backup that I created using the rdsadmin_rman_util.backup_tablesapce Amazon RDS procedure.

I followed this page: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Appendix.Oracle.CommonDBATasks.RMAN.html

I restored a snapshot of Database A to Database B. I then created a tablespace backup on Database B, sent that backup to S3, loaded that backup into Database B and then ran an import script. The script can be found here: https://paste2.org/G8ANWsmb

The command I ran to create the backup:
BEGIN
rdsadmin.rdsadmin_rman_util.backup_tablespace(
p_owner => 'SYS',
p_directory_name => 'DATA_PUMP_DIR',
p_tablespace_name => '<tablespace_name>',
p_parallel => 1,
p_rman_to_dbms_output => FALSE);
END;
/

From SQL*Plus I executed my script:
SQL> @import.sql
declare
*
ERROR at line 1:
ORA-39001: invalid argument value
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 79
ORA-06512: at "SYS.DBMS_DATAPUMP", line 4087
ORA-06512: at "SYS.DBMS_DATAPUMP", line 4338
ORA-06512: at line 8

Using a very similar version of the above script, I have imported database dumps many times before but the dumps came from DBA's managing an on-prem DB and they didn't use rdsadmin to create the dumps.

I am open to an alternative way of importing the dump, my only requirement is that I need to remap the schema and tablespace name.

Any and all help will be greatly appreciated. :) Thank you.

Regards,
Russell