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

<figure><img src="https://3611830798-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MjbN1iGmN_HBnj_fyU9%2Fuploads%2FvKs2vH45D8Qebdbg8yyl%2Fimage.png?alt=media&#x26;token=ace554af-2601-4146-af82-25a9a6a6477c" alt=""><figcaption><p>Self-illumination</p></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.