It is customary for web developer's clients to come up with genius ideas just after the release of their websites. This is normal because once a website is exposed to a real world, many missing features or errors are revealed. Obviously, implementation of the new functionality or error debugging must be performed separately without affecting the current version.

All these problems are usually covered by the technical support service of the Partner who was carrying out the web project design and implementation. A client may also transfer the project to another Partner, which implies that the new Partner receives a full set of existing website specification and documentation.

On the other hand, errors that may arise in the Bitrix Framework system core are fixed automatically by obtaining updates via the SiteUpdate system (available for owners of a valid license key). A client may have a Partner update the Bitrix Framework platform as a part of the technical support service agreement. The Partner's custom modules, if any, may be obtaned using Marketplace ("Settings > Marketplace > Solution Update").

Verify that the file /bitrix/php_interface/this_site_support.php contains contact information of a Partner who provides technical support for this web project.