I am not clear what behavior you are seeing. Are you trying to import a RAP which includes schema changes and import wizard is indicating that you do not have privileges? Please provide the PegaRULES log file and/or screenshots of what you are seeing.
Yes, I am importing a project placed in pega lsa course. It had a extra schema jar, i tried to import the main jar file and expected pega to detect the schema but it showed that the import contained error and a database table couldn't be imported.
Please clarify the operation you are trying to perform. It appears as though you are working on the 7.3 CLSA course and are trying to import something. Please supply more details on what you are attempting to import