The CNMC has analyzed the guidelines for attorney fees provided by the Bar Association of Murcia, emphasizing that attorney fees should be freely determined and that professional associations are prohibited from establishing fee scales or recommendations. However, exceptions are made for the development of guidelines for the assessment of costs and the rendering of accounts. The CNMC recommends that professional associations evaluate their guidelines in accordance with the doctrine of the Supreme Court and the CNMC. The guidelines provided by the Bar Association of Murcia do not include any numerical or quantitative references, and they consider factors such as the economic interest at stake and the amount of work involved. The dissemination of these guidelines should not contain numerical or quantitative references, and the reports submitted by the professional association to the judicial body in case of assessment challenges should not be published. The CNMC's analysis is advisory in nature and does not affect its enforcement powers.