Enumeration AttributeOperationError

2: Common failure. The attribute operation fails.

3: The argument that you put for this attribute operation is invalid. For example, you cannot set a user or channel attribute as "".

4: The attribute size exceeds the limit.

• For user attribute operations: The user's overall attribute size would exceed the limit of 16 KB, one of the user's attributes would exceeds 8 KB in size, or the number of this user's attributes would exceed 32 after this attribute operation.
• For channel attribute operations: The channel's overall attribute size would exceed the limit of 32 KB, one of the channel attributes would exceed 8 KB in size, or the number of this channel's attributes would exceed 32 after this attribute operation.

7: A timeout occurs during the attribute operation. The current timeout is set as five seconds. The current login timeout is set as six seconds. Possible reasons: The user is in the ABORTED or RECONNECTING state.

5: The method call frequency exceeds the limit.

• For setLocalUserAttributes, addOrUpdateLocalUserAttributes, deleteLocalUserAttributesByKeys, and clearLocalUserAttributes taken together: the limit is 10 calls every five seconds.
• For getUserAttributes and getUserAttributesByKeys taken together, the limit is 40 calls every five seconds.
• For setChannelAttributes, addOrUpdateChannelAttributes, deleteChannelAttributesByKeys, and clearChannelAttributes taken together: the limit is 10 calls every five seconds.
• For getChannelAttributes and getChannelAttributesByKeys taken together, the limit is 10 calls every five seconds.

6: The specified user is not found, either because the user is offline or because the user does not exist.

102: The user does not call the login method, or the method call of login does not succeed before the attribute operation.