PGVariant (Product Group Variant)

A PGVariant is a specific variety or sub-type within a product group — used to identify goods at a finer level of detail than the product group alone allows. In an agricultural stock context, a PGVariant typically represents a crop variety (e.g. "Pannonikus" for wheat, "PR45D03" for rapeseed) or a quality grade designation. This granularity is important because different varieties of the same commodity can command different prices, carry different quality profiles, and require separate stock balances for accurate inventory management.

In the stock system, PGVariants are referenced on both contract positions and transaction positions, creating a direct traceability link: the variant contracted and the variant actually delivered are both recorded, enabling automatic or manual quality verification against the agreed specification. Variant-level reporting allows the trading team to monitor open positions and stock balances at the variety level — for example distinguishing how much of one wheat variety is contracted vs. received vs. still in warehouse — which is critical in markets where variety identity is commercially significant.