# Why prompt 'Self-illumination in the scene has reached its limit'?

<figure class="doc-image doc-image--stack">
  <img src="https://docs-static.d5render.com/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces/-MjbN1iGmN_HBnj_fyU9/uploads/vKs2vH45D8Qebdbg8yyl/image.png" alt="Self-illumination" />
  <figcaption>Self-illumination</figcaption>
</figure>

Self-illumination in D5 scene has its upper limit; the current number of self-illumination in D5 scene is judged by the number of vertices of self-illumination model, and the upper limit is 134217727.

If it is close to or exceeds this upper limit, it is recommended to optimize and reduce the surface of the self-luminous model.