> For the complete documentation index, see [llms.txt](https://onestore-dev.gitbook.io/dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://onestore-dev.gitbook.io/dev/cht/tools/billing/v21/references/annotations.md).

# Annotations

* [PurchaseClient.ConnectionState](/dev/cht/tools/billing/v21/references/annotations/purchaseclient.connectionstate.md)
* [PurchaseClient.FeatureType](/dev/cht/tools/billing/v21/references/annotations/purchaseclient.featuretype.md)
* [PurchaseClient.ProductType](/dev/cht/tools/billing/v21/references/annotations/purchaseclient.producttype.md)
* [PurchaseClient.RecurringAction](/dev/cht/tools/billing/v21/references/annotations/purchaseclient.recurringaction.md)
* [PurchaseClient.ResponseCode](/dev/cht/tools/billing/v21/references/annotations/purchaseclient.responsecode.md)
* [PurchaseData.AcknowledgeState](/dev/cht/tools/billing/v21/references/annotations/purchasedata.acknowledgestate.md)
* [PurchaseData.PurchaseState](/dev/cht/tools/billing/v21/references/annotations/purchasedata.purchasestate.md)
* [PurchaseData.RecurringState](/dev/cht/tools/billing/v21/references/annotations/purchasedata.recurringstate.md)
* [PurchaseFlowParams.ProrationMode](/dev/cht/tools/billing/v21/references/annotations/purchaseflowparams.prorationmode.md)