You mean to say that you have created tablespace using the script rsaIMSLiteMSSQLSetupTablespaces.sql and also you have created two users "RSA_USER", RSA_DBA" using this script rsaIMSLiteMSSQLSetupUsers.sql.You have have executed both the scripts properly then you should not get this error.Could you cross check both scripts are executed successfully or not ? If your problem is not getting resolved , then do one thing Drop the database "DROP DATABASE RSA" and delete the both table sapces "RSA_INDEX" and RSA_DATA".Also drop the both users (Script file is there for doping the users use the same).Once Everything is done then make the changes on the both script files (rsaIMSLiteMSSQLSetupTablespaces.sql and rsaIMSLiteMSSQLSetupUsers.sql) according to the instruction. I hope It would work fine.
Thanks,
Atul