\documentclass{article}
\begin{filecontents*}{\jobname.bib}
@online{apqcAPQCProcessClassification2025,
title = {{{APQC Process Classification Framework}} (PCF)},
author = {{APQC}},
keywords = {business process modelling}
}
@book{knuth,
author = {Knuth, Donald E.},
title = {The {\TeX} book},
date = 1984,
maintitle = {Computers \& Typesetting},
volume = {A},
publisher = {Addison-Wesley},
location = {Reading, Mass.},
langid = {english},
langidopts = {variant=american},
sortyear = {1984-1},
sorttitle = {Computers & Typesetting A},
indexsorttitle= {The TeXbook},
indextitle = {\protect\TeX book, The},
shorttitle = {\TeX book}
}
\end{filecontents*}
\usepackage{biblatex}
\addbibresource{\jobname.bib}
% Define biblatex filter.
\defbibfilter{si}{keyword={business process modelling}}%
\begin{document}
test
\nocite{*}
\printbibliography[title={Système d'information},filter={si}]%
\end{document}