  In this work, we consider multigoal-oriented error estimation for stationary
fluid-structure interaction. The problem is formulated within a
variational-monolithic setting using arbitrary Lagrangian-Eulerian coordinates.
Employing the dual-weighted residual method for goal-oriented a posteriori
error estimation, adjoint sensitivities are required. For multigoal-oriented
error estimation, a combined functional is formulated such that several
quantities of interest are controlled simultaneously. As localization technique
for mesh refinement we employ a partition-of-unity. Our algorithmic
developments are substantiated with several numerical tests such as an elastic
lid-driven cavity with two goal functionals, an elastic bar in a chamber with
two goal functionals, and the FSI-1 benchmark with three goal functionals.
