21. On the application of a number of professional artists in the field in which a recognition has been granted, equal to 25% of the membership of the recognized association or group, or on the application of an association of promoters, the Commission shall ascertain the representativeness of the recognized association or group.
An application under the first paragraph may be made only in the period defined in paragraph 2 of section 17.
The Commission shall withdraw recognition from an association or group if it considers that it is no longer representative of the professional artists in the field.