(1) The partners are to perform their professional services in accordance with the applicable laws governing the respective profession.
(2) The partnership agreement may not exclude a partner from conducting other business relating to the exercise of their own profession.
(3) In all other respects, the legal relationship of the partners to one another must comply with the partnership agreement. Unless otherwise specified in the partnership agreement, section 116 (1), section 116 (2) sentence 1, section 116 (3) to (6), and sections 117, 118 and 119 of the Commercial Code apply accordingly.