The event-driven model for indexing the catalog ensures that changes to catalog data are automatically updated in the search index. The **Indexing Processor State** section is located at **Commerce > Administration > Catalog Indexing **(version 13 and lower: Commerce Manager > System Settings > SearchIndex) .
The **Recover** and **Invalidate** buttons manage the system that handles event-driven indexing.
The status indicator displays the state of a queue of catalog entries that needs to be reindexed. If it is _invalid_, the system cannot distinguish between actual catalog data and the search index.
Click **Recover **to rebuild the full search index. When the recovery is complete, the state is changed to _valid_, and changes are automatically pushed into the index. The Recover button is disabled if the queue state is _valid_.
Click **Invalidate **to clean out the queue and start over. If the queue state is _invalid_, clicking **Invalidate** resets the state, while clicking **Recover** rebuilds the search index. If the state is recovering, the screen displays a completion percentage of the recovery operation (the information is retrieved from the search provider).
When the state is valid again, the handler displays the number of items in the queue; that is, the number of catalog entries that need to be indexed. This number can get big after a catalog import, because it reindexes the changed catalog entries in the background. In most cases, the number is small.
Disabling event-driven catalog indexing
To disable event-driven catalog indexing, adding the following to appSettings.