Use the Create Case endpoint to initiate a dispute claim. A single claim may contain multiple disputed transactions. Call this endpoint when the account holder initiates a claim by clicking a "dispute a transaction" control on your interface.
This endpoint returns a case number (caseId) that you pass with all subsequent endpoint calls that are related to this dispute.
This endpoint is part of a conversational API—a series of endpoint calls that must be made in a certain order. For instructions see the Creating a Dispute guide.