Error-: The stage registered as the first stage of this set is invalid. Firstly Verify that the "Start Stage" is correct as follows: 1) Login to "System Administrator" responsibility 2) Navigate Request > Set 3) Query your request set (F11) 4) Click on the button "Link Stages". 5) Check the field "Start Stage". And check all level of concurrent program . Error-: The stage registered as the first stage of this set is invalid. For More Information Visit on www.OracleAppsGuide.com Or Subscribe your email-id on OracleAppsGuide