Before starting the release, the service transition planning role should verify the plans and check that they are up to date, have been agreed and authorised by all relevant parties, and include all relevant detail (dates, deliverables etc.). It is also necessary to check that all costs, and organisational, technical and commercial aspects have been considered and that overall risks have been assessed. Configuration items need checking for compatibility with each other and the target environment. People must understand and be able to implement the plans. Finally, checks should be made to ensure that no business or design changes have rendered the release inappropriate.