# Availability

The first step when making a sale is to check availability. If `allowFreesale` is set to `true` on the product then this step is optional, but it is still recommended to detect closures and operational limits.

{% openapi src="<https://221588849-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M7bgGIyO7QYNOfUMfxh%2Fuploads%2Fgit-blob-fa2d8cb1d7297d352c2639e6c4c6a990f2add6d7%2Fopenapi.yaml?alt=media>" path="/availability/calendar" method="post" %}
[openapi.yaml](https://221588849-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M7bgGIyO7QYNOfUMfxh%2Fuploads%2Fgit-blob-fa2d8cb1d7297d352c2639e6c4c6a990f2add6d7%2Fopenapi.yaml?alt=media)
{% endopenapi %}

{% openapi src="<https://221588849-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M7bgGIyO7QYNOfUMfxh%2Fuploads%2Fgit-blob-fa2d8cb1d7297d352c2639e6c4c6a990f2add6d7%2Fopenapi.yaml?alt=media>" path="/availability" method="post" %}
[openapi.yaml](https://221588849-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M7bgGIyO7QYNOfUMfxh%2Fuploads%2Fgit-blob-fa2d8cb1d7297d352c2639e6c4c6a990f2add6d7%2Fopenapi.yaml?alt=media)
{% endopenapi %}

{% openapi src="<https://221588849-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M7bgGIyO7QYNOfUMfxh%2Fuploads%2Fgit-blob-fa2d8cb1d7297d352c2639e6c4c6a990f2add6d7%2Fopenapi.yaml?alt=media>" path="/availability/calendar/batch" method="post" %}
[openapi.yaml](https://221588849-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M7bgGIyO7QYNOfUMfxh%2Fuploads%2Fgit-blob-fa2d8cb1d7297d352c2639e6c4c6a990f2add6d7%2Fopenapi.yaml?alt=media)
{% endopenapi %}

{% openapi src="<https://221588849-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M7bgGIyO7QYNOfUMfxh%2Fuploads%2Fgit-blob-fa2d8cb1d7297d352c2639e6c4c6a990f2add6d7%2Fopenapi.yaml?alt=media>" path="/availability/batch" method="post" %}
[openapi.yaml](https://221588849-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M7bgGIyO7QYNOfUMfxh%2Fuploads%2Fgit-blob-fa2d8cb1d7297d352c2639e6c4c6a990f2add6d7%2Fopenapi.yaml?alt=media)
{% endopenapi %}