AccumulationRegisterManager.<Accumulation register name>.SetAggregatesMode
True - aggregates are used instead of totals.
False - totals are used (the mode corresponds to the 1C:Enterprise 8.1 accumulation register behavior).
If the register configuration contains no aggregates, the exception is called.
Totals are cleared on aggregates mode set enabled.
On aggregates mode set disabled aggregates are cleared and totals are recalculated.