(9)This Directive should foster the development of secondary markets for NPLs in the Union by removing impediments to, and laying down safeguards for, the transfer of NPLs by credit institutions to credit purchasers, while at the same time safeguarding borrowers’ rights. Any measures adopted should harmonise the authorisation requirements for credit servicers. This Directive should therefore establish a Union-wide framework for both purchasers and servicers of non-performing credit agreements issued by credit institutions, whereby credit servicers should obtain authorisation from, and be subject to the supervision of, Member States’ competent authorities.