This term is defined in ECSS-Q-ST-70-39C as
material or joint type and dimension or welding process combination which is covered by a WPS”

This term is defined in ECSS-S-ST-00-01C as
set of interrelated or interacting activities which transform inputs into outputs

This term is defined in ECSS-Q-ST-70C Rev.1 as
set of inter_related resources and activities which transforms a material or semi_finished product into a semi_finished product or final product