ImpactObject definition

[demeringo]

Trying to represents impacts in a json schema leads to question: should we make all fields of an impact object mandatory ?

My understanding in the draft response.json and https://github.com/Boavizta/PCR-SI_dataformat/blob/main/ImpactObject.md is that we tend to define impacts objects as an fixed list of all (4) licecycle steps X all (18) indicators.

{
            "BLD" : {
                  "GWP": 123,
                  "ADPe": 13,
                  "ADPf": 23,
                  "WU": 12,
                  "...": ...
            },
            "DIS" : {
                  "GWP": 123,
                  "ADPe": 13,
                  "ADPf": 23,
                  "WU": 12,
                  "...": ...
             },
            "USE" : {
                  "GWP": 123,
                  "ADPe": 13,
                  "ADPf": 23,
                  "WU": 12,
                  "...": ...
            },
            "EOL" : {
                   "GWP": 123,
                  "ADPe": 13,
                  "ADPf": 23,
                  "WU": 12,
                  "...": ...
            }
}

Should we use arrays instead (maybe with explictly named properties) that would allow unknwown values to not appear ?

[Amael-PE]

We can let each of the LCA steps and indicators as optional fields, depending on the background engine.
The PCR indicators must be field for standard compliance.