If an error occurs during processing of a method, an error message containing a description of the error together with an error code is returned.
Example
Failed to invoke method getAll in class org.termweb.api.internal.XmlRpcReceiver: The session has expired. (Code:1300)
Authentication errors
1000
The max number of concurrent users is reached
1001
The user account is disabled
1002
The client account is disabled
1003
User is logged in from another IP address
1005
No auto-login guest account exists
1006
Unknown client account
1007
Wrong login or password
1008
API is disabled
Authorization
1100
User is not authorized to perform this operation
Unknown object
1200
No such object (for specified ID or name)
Session expired
1300
The user's session has expired
Unsupported object
1400
Wrong object type for an argument in this method call
Not validating
1500
Object is not complete or contains illegal values