appRequestReject (29)

The appRequestReject message is the negative response to an appRequest. It indicates that the user has declined the invitation to start a Mini-App session.

Core Data Types

• IxiBytes: See IxiBytes Encoding.

Payload Structure

Field	Data Type	Min	Max	Description
sessionId	IxiBytes	*	*	The unique identifier from the original appRequest message, indicating which session is being rejected.
data	IxiBytes	0	*	Optional. Application-specific data explaining the rejection reason or providing additional context.

Behavioral Notes

• Trigger: This message is sent when a user declines an incoming Mini-App request.
• Session Termination: Upon receiving appRequestReject, the original requester knows the session will not be established. No further appData messages should be sent for this session ID.
• User Decision: Unlike appRequestError (which signals technical problems), this represents a deliberate user choice to decline participation.