Whether the file was sufficiently medically instructed to determine the claimant's residual work capacity and alleged deterioration from February 2011.
The medical record was insufficient; the case required a rheumatological expert assessment by an independent expert.
Under the inquisitorial principle, the administration must investigate decisive medical facts ex officio. Because contradictory certificates were already in the administrative file and the alleged worsening had not been adequately clarified, the insurance office should have ordered the necessary expertise before issuing its decision.