--- /dev/null
+Resources for the Graph-API-Error-Codes:
+
+http://stackoverflow.com/questions/10478812/facebook-graph-api-error-code-list
+http://fbdevwiki.com/wiki/Error_codes
+https://developers.facebook.com/docs/graph-api/using-graph-api/#errors
+https://developers.facebook.com/docs/payments/reference/errorcodes