Hi, It would be a Long List.I would tell some.Hope you need to plan and prepare a detailed document with test cases and expected results.There is no common scripts for testing custom ones as It is specific to your environment so you are the right & best to test it. The most important change and key one is the Data Model change (V 8.0) .If you are using Financials then you have lot to test. Customization --> You need to test your custom nsql,nsql based Lookups,Custom process which uses Gel Script,Custom Reports,Extracts and Jobs (based on DB) and any other Custom process Like Integrations,etc. Some of the tables are changed as an view (srm_projects) it will still work,but the performance will not be the same,you need to test that too.If you have written triggers on these tables then shoud also consider that. You have build the custom ones,so you can write scripts (Reports) to validate.. If you are also upgrading the DB (i.e oracle 9i -10g) then you need the test the performance of the sql's as the Execution plan will be different and the response time would be different. If you have build any custom DB objects (Views,Triggers,Procedures,Functions) you need to modify and Test that too. As far i know OOTB functionalities will be automatically be migrated and work.The only thing in new version to note is there will be few functional changes.(Financial Planning,Requisition) Go by each Modules and test.Do all the regular activities you do and check whether you are able to do the same(Resource,Project,task creation,Updation,Schdeule via MSP,Timesheets,run the Jobs,reports,XOG etc). Access Rights-->There is some differences in access rights so you need to map and provide and then check that.If you are providing access rights via OBS or groups then login as the respective PM or RM user and test the screens, If you have any performance issues currently then you can also encage testing team for testing the application performance.(Using Load Runner or winrunner). Cheers,Sundar