Some banks are having to adjust the models they use to quantify risk on their balance sheet to comply with new rules known as Basel III and with the European Central Bank's own demands, the ECB's top supervisor Andrea Enria said on Wednesday.

Enria added there was no "general dissatisfaction" with these so-called internal models, but rather issues with some individual banks. (Reporting By Francesco Canepa; Editing by Kevin Liffey)