> For the complete documentation index, see [llms.txt](https://docs.peakcommerce.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.peakcommerce.com/product/settings/billing-catalog.md).

# Billing & Catalog

Settings and tools for keeping PeakCommerce in sync with your billing system's catalog — the billing integration cache, catalog drift detection, and catalog sync history.

* [Billing Integration Cache](/product/settings/billing-catalog/billing-integration-cache.md) — the cached view of your billing provider's data and how to refresh it.
* [Catalog Drift](/product/settings/billing-catalog/catalog-drift.md) — where PeakCommerce's catalog has diverged from your billing provider.
* [Catalog Sync History](/product/settings/billing-catalog/catalog-sync-history.md) — the record of past catalog syncs and their outcomes.


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