Supriya - DevConnect provides formal compliance testing programs for our Technology Partners. You can learn more about the benefits of a Technology Partner membership through the Program Overview information (
http://www.devconnectprogram.com/site/global/program_benefits/membership_overview/index.gsp, accessible via either the Program & Benefits tab in the top Mega-Menu, or via the Program Benefits tab in the middle of the main DevConnect page).
To be clear, if you are seeking support from DevConnect on the use of Avaya API's in order to develop your own application, you can purchase DevConnect Technical Support in 10-hour blocks of time as a "Support-enabled Registered Member".
If you are seeking, however, to have your application recognized by Avaya as interoperable, Compliance Testing and a Technology Partner membership would be the proper path. DevConnect does not "support 3rd party applications" directly; our Application Notes that are created from the compliance testing process are configuration guidelines to be used by customers, channel partners and Avaya Client Services personnel to troubleshoot interoperability issues.