Unique case identifier assigned to the dispute

Transaction Control Number (used to control concurrent actions and avoid change clashes)

The note content itself.

User name of the individual who adds the notes.

Institution number (8-digit number) associated with the merchant. This information defines the acquirer for the merchant. If a consumer is granted access to this API for multiple institutions, this field must be populated. If access is for only one institution, the API will automatically determine this value, making it optional for the client.

Optional security header. Used to ensure the request has not been tampered with during transmission. The Message-Signature is the Base64 encoded HMAC hash (SHA256 algorithm with the API Secret as the key.) For more information, refer to the supporting documentation on the Developer Portal.