"propriétaire du problème" ne signifie pas grand chose en français. Google associe cela aux démêlés entre locataires et propriétaires.

The problem owner is the person or organization who ultimately owns the problem. The results they produce or fail to produce impact the overall performance of the business.


Ownership: The owner of a problem is the person most affected, upset, or discontent. Owning a problem does not mean being at fault or being the only one that participates in a solution. However, the push for getting things changed must come from the actual owner. This may seem an unfair additional burden, but it is the only sane way since straightforward self-interest has a self-regulatory effect on situations. Ownership must be contrasted with victimhood. Victimization occurs of course. But not all bad situations stem from victimization, and it is not necessary to be a victim to get things changed. Sometimes young children, or truly disabled people need a proxy problem owner, or advocate, but the advocate needs to be uninvolved personally, or things will get muddied.

Source: https://michaelsamsel.com/Content/Individuals/problem-solvin...