Many people need both formal qualifications and CPD during their career. A regulated qualification may support entry into a profession, progression to further study or formal recognition of competence. CPD is usually used after that point, helping the person keep skills current as practice, guidance and workplace expectations change.
For example, a learner may already hold a formal qualification in their field, then complete CPD courses each year to record technical updates, reflective learning or employer-required development. The CPD record supports continuing practice. It does not replace the original qualification.
For providers, the right approach is transparency. If the course is CPD, say it is CPD. If the course leads to a regulated qualification, identify the awarding organisation and the regulated qualification separately. Keeping those claims apart builds more trust than trying to blur them.