IEC 63356 standard testing specifies LED lamps data sheets and LED modules with parameters per data sheet for LED light source that takes  interchangeability between products from different LED light source characteristics.

The testing  is done in testing lab and it covers Design parameters and values in standard IEC 63356-1:2022 PRV-LED light source characteristics – Part 1: Data sheets

Also it includes testing of IEC 63356-2:2022 PRV- LED light source characteristics – Part 2: Design parameters and value