Can organization exclude requirement 8.3 from certification?

Answer:

The only requirement of the standard that can be excluded from certification is 8.3 Design and development of products and services (the development of the production processes must always be taken into account).
This exception needs to be well explained in documented information with proof that the organization has no process that is related to design and development.
Prior to certification, the organization must demonstrate that it can meet all requirements of IATF 16949 (readiness assessment with at least 1 day on location); this includes a full audit cycle including a QM assessment.

I suggest you find out more about the topic please see article: How to write the IATF 16949 Quality Manual https://advisera.com/16949academy/blog/2017/05/31/how-to-write-the-iatf-16949-quality-manual/