> For the complete documentation index, see [llms.txt](https://docs.nosto.com/magento-2/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nosto.com/magento-2/features/indexer.md).

# Indexer

Nosto module uses Magento 2 indexers for sending product updates to Nosto via API. The indexer behaviour varies quite a bit depending on your module version. Please refer to the corresponding module version for indexer instructions and troubleshooting.

[For version 7.x](https://docs.nosto.com/magento-2/features/indexer/on-7.x)

[For versions 5.x](/magento-2/features/indexer/on-5.x-and-6.x.md)[ and 6.x](https://docs.nosto.com/magento-2/features/indexer/on-5.x-and-6.x)

[For versions 4.x](/magento-2/features/indexer/4.0.0-less-than-5.0.0.md)

[For versions 3.x](/magento-2/features/indexer/legacy-indexer.md)