You are a non-resident and have a bank account in Spain in order to manage the expenses generated by your property in Spain. Spanish banks usually request from their non-resident clients, every two years, the update of the identity document or passport, as well as proofs of income. The financial sector also participates in the fight against money laundering. In case you do not provide said updates, your account would be frozen. To avoid these incidents, you may direct debit all your bills to your French bank account directly.