Projection

I say stuff like that to the people who work for me pretty frequently.

โ€œI know Sales told you to do it, but we donโ€™t work for Sales, and we definitely donโ€™t have time for their wild goose chase projectsโ€ is the kind of thing I often have to remind my team of. Usually followed by, โ€œIf they really want it, theyโ€™ll make it an actual project that can be tracked and planned.โ€

It seems ruthless but itโ€™s necessary. Otherwise, your department achieves nothing but other peopleโ€™s misguided and unbudgeted projects while making none of its own goals and, eventually, you get fired.