In ASOsamp.Sample, adding a child branch under Computers and Peripherals in the All Merchandise hierarchy increases the number of children to four. Adding this child, which must be added after the existing members, does not cross the power of 2 boundary. The new member, called Other Peripherals, has two children. Systems (which is a sibling of Other Peripherals) has two children. Adding the child branch stays within the power of 2 boundary for children of sibling members at the same level. When the outline is saved, Essbase performs a light restructure.
Adding a child branch with three child members crosses the power of 2 boundary and may require that Essbase perform a full outline restructure. However, if Systems already had three members, the power of 2 boundary would be four and, at most, four children can be added to Other Peripherals without triggering a full outline restructure.