What are the possible causes for Facebook's "Error validating application"?

Question

My application uses Facebook's Graph API to pull user's information via /me, /wall, and so forth.

Sometimes users run into the error:

    "error": {
        "message": "Error validating application.", 
        "type": "OAuthException", 
        "code": 190
    }

I can't find any reasons why this might be triggered as:

• Access token is valid, never-expires, and is associated to my application.
• I got the permissions to do the API calls
• API calls works fine afterward

In this condition, what might cause this?

Answer 1

Assuming you're receiving this error only for a small percentage of requests, you shouldn't need to do anything - the error happens when the provided access token is being checked for validity and the app's details can't be verified - usually an intermittent problem affecting only a tiny percentage of requests (unless you're forgetting to include the app ID in your SDK initialisation, in which case check that first)