Rajesh, If I understand you question correctly you need to insert a test environment between DVP and QUA. In Aldon LM(i)[formerly ACMS] you can insert an ITG (integration) environment within a release between DVP and QUA by going into your release configuration and choosing option 12 to work with environments. The F6 there will allow you to add the ITG environment. You mentioned also in your post that you wanted the developer to choose one of three environments as they wish. This is not in the design of the product. You can have multiple developer environments that you can test but once you promote/check-in from DVP to the first controlled environment then you are into the the "normal" promotion path which has a single thread. You can however, have as many test environments as you like associated with ITG called data sets with separate data content for testing, but they will all be updated upon promotion of the mapped objects into the ITG environment. There may be other solutions too but we would need to discuss more specifically your situation to assist you in configuring LM(i) to your requirements. I am going to suggest that you contact Aldon Technical Support as we will be more than happy to discuss in detail your situation so we can formulate a proper solution. For support questions such as this there is no additional charge as it is included in your maintenance. For more information go to www.aldon.com and access the cusotmer access area in the top right corner of the main page. From there you will have full access to the Product manuals that were also delivered with your product. Specifically I would suggest looking at Chapter 3 of the General Topics section regarding data sets.