Hi,
The reconcillation account reflect a company's liability to vendor. It will consolidate the liability. There is no option to have multiple reconcillation account for a vendor and company code in standard as of my knowledge.
May I know what is the benefit you are expecting by having different reconcillation account based on material. If its for tracking purpose, you can trigger different GR/IR account (WRX) based on valuation class and track the amount based on valuation class and WRX.
Regards,
AKPT