  The understanding and avoidance of space charge induced resonances is of
utmost importance for long storage times in synchrotrons, as they can lead to
halo generation and subsequent beam loss. This report discusses the absence of
structure resonances for heavy-ion operation in SIS100 in the tune quadrant
foreseen for the fast extraction mode, $18.5 < Q_{x,y} < 19$ . Simulations of
beam losses for the duration of the SIS100 accumulation plateau at nominal
transverse space charge conditions with a maximum tune shift of $\Delta
Q^{SC}_y = -0.3$ supplement the discussion.
