GKChallengeMBS.GKChallengeStateCompleted = 2

Type	Topic	Plugin	Version
const	GameKit	MBS MacFrameworks Plugin	13.0

Possible states that a challenge can live in.

The receiving player successfully completed the challenge.
Available on Mac OS X 10.8.2 and newer.

GKChallengeMBS.GKChallengeStateDeclined = 3

Type	Topic	Plugin	Version
const	GameKit	MBS MacFrameworks Plugin	13.0

Possible states that a challenge can live in.

The receiving player declined the challenge.
Available on Mac OS X 10.8.2 and newer.

GKChallengeMBS.GKChallengeStateInvalid = 0

Type	Topic	Plugin	Version
const	GameKit	MBS MacFrameworks Plugin	13.0

Possible states that a challenge can live in.

An error occurred. The state of this challenge is not valid.
Available on Mac OS X 10.8.2 and newer.

GKChallengeMBS.GKChallengeStatePending = 1

Type	Topic	Plugin	Version
const	GameKit	MBS MacFrameworks Plugin	13.0

Possible states that a challenge can live in.

The challenge has been issued, but is not yet completed nor declined.
Available on Mac OS X 10.8.2 and newer.