Reasons

This document serves as the official registry of reasons for the OPDS and ODL specifications.

Reasons are meant to convey why a particular resource is available/unavailable, either at a publication, link or license level.

URL	Description	Associated states
https://registry.opds.io/reason#exhausted	Indicates that a publications and/or all of the usage allowed by its licenses have been exhausted.	unavailable
https://registry.opds.io/reason#expired	Indicates that a publications and/or all of its licenses have expired.	unavailable
https://registry.opds.io/reason#onHold	Indicates that a publication is temporarily unavailable because it’s on hold.	unavailable or reserved
https://registry.opds.io/reason#preordered	Indicates that a publication is temporarily unavailable because it hasn’t been released yet.	unavailable
https://registry.opds.io/reason#refunded	Indicates that a publication or one of its licenses has been refunded.	unavailable
https://registry.opds.io/reason#removed	Indicates that a publication or one of its licenses has been removed from a subscription or from distribution in general.	unavailable