In Jain Dharma, religion is based on right faith, right knowledge, and right conduct, not on caste or Rajput identity.

So, “Chandalia are Rajput Jain” is a social/community identity question, not a Jain doctrinal one. A person or family may be Jain and may also belong to a Rajput or other community by social background, but Jain identity comes from following Jain Dharma.

If you mean a specific Jain community or lineage, that would be a local social tradition, not a rule of Jain scripture.