Accumulation processing
When the Scheduler encounters an operation with OLTYPE=0 after processing one or more operations for which OLTYPE≠0, it processes the operation that has OLTYPE=0 and then accumulates the original load back together. During the accumulation, the Scheduler adds a load to the accumulating quantity for its particular order. When the number of arriving items for a particular order is greater than or equal to the initial order size, the accumulation is considered complete.