Action Inquiries are formal requests to investigate the attribution and/or payout of an action. Rewards partners can submit an action inquiry to you if they believe an action should've been attributed to them, or if the payout amount is incorrect. In some cases, the action may have been credited to other sources, or in other cases it might not have been tracked originally. Rewards partners usually become aware of missing or incorrectly attributed actions through their own systems and sub-affiliates who haven't been credited (or paid) for an action.
The endpoint allows you to view action inquiries, retrieve a specific action inquiry, and update an action inquiry with a resolution.