From Facebook Developer Wiki

Contents 1 Description 2 Parameters 3 Response 4 Error Codes 5 Notes

Description

Sets (several) property values for an application. These values previously were only accessible through the Facebook Developer application.

Parameters

Required	Name	Type	Description
required	api_key	string	The application key associated with the calling application. If you specify the API key in your client, you don't need to pass it with every call.
	sig	string	An MD5 hash of the current request and your secret key, as described in the How Facebook Authenticates Your Application. Facebook computes the signature for you automatically.
	v	string	This must be set to 1.0 to use this version of the API. If you specify the version in your client, you don't need to pass it with every call.
	properties	object	A JSON encoded map of property names to new values. This call will fail if values have the wrong type. The full list is described on ApplicationProperties.
optional	format	string	The desired response format, which can be either XML or JSON. (Default value is XML.)
	callback	string	Name of a function to call. This is primarily to enable cross-domain JavaScript requests using the <script> tag, also known as JSONP, and works with both the XML and JSON formats. The function will be called with the response passed as the parameter.

Response

This method returns true if the set is successful.

Error Codes

Code	Description
1	An unknown error occurred. Please resubmit the request.
2	The service is not available at this time.
4	The application has reached the maximum number of requests allowed. More requests are allowed once the time window has completed.
5	The request came from a remote address not allowed by this application.
101	The API key submitted is not associated with any known application.
104	Incorrect signature.
211	Application has no developers.

Notes

• This function does not require a session_key or call_id.
• Desktop applications cannot call this method, as the method allows for configuring the application itself.