Specific data is determined by its contribution to the total GWP indicator within the "specific" data category. In stages A1-A3, the following data point types are classified as "specific":
EPDs and private data points.
Processes including energy, transport, and direct process emissions.
"Manufacturing waste" is treated as generic data as a conservative approach, acknowledging potential use of generic information due to data limitations in some scenarios.
The percentage of specific data used is calculated as:
Specific data used (%) = (GWP-fossil of all specific data / GWP-fossil of A1-A3) * 100