Field help (CSMREO2) 

When checked, this box is used to process, on the reorder plan, the requests of the following type: "Consumption areas".

This type of request relates to shortages on shipment preparation locations that occur when the product quantity allocated to the location is greater than the location stock.

These shortages on consumption areas are generated as a result of:

A requirement is then anticipated by the system according to the rule defined, for one of the two following documents depending on the case: Deliveries or Material tracking.
These shortages are recorded in table STOALL.
The reorder plan uses these records and displays the locations to be reordered for each product up to the maximum quantity defined for the location.
SEEINFO The reorder type selection cannot be modified. It is defined in the entry transaction used.