Reports RPUFIXDS and RPUPAV00

Hello Experts.

Recently we finished the production refresh for Quality servers. Our client is intrested to run RPUFIXDS and RPUPAV00 reports post refresh. I read the documentation for these reports but couldnt get the functionality of these reports.

Can anyone please help me whats the relevance of these reports and why we need to execute them post refresh.

thanks

Nithi