No. In principle, you do not need to submit any documentation along with your work notification.
TONO has a scheme, under which a random sample of works is routinely selected. Documentation for these works will be requested specifically. This scheme has been set up to ensure that reported works comply with the criteria stipulated in TONO’s Distribution Plan and that existing music/lyrics have not been used without permission.
However, if you have arranged or altered a piece of copyright-free music and want a higher percentage than the Distribution Plan allows, you must submit supporting documentation.