Each inventory record has fields for issued and forecasted quantities broken down by months. The monthly issued quantities are maintained for two years, and the yearly totals are maintained for an additional 3 years. The monthly forecasted quantities are maintained for one year. At the close of each year, the Annual Close process is run to roll back the historical information stored on Inventory Inquiry (INVN) for each item. Actual quantities and forecasted quantities are both moved back one year, leaving an empty array of 12 months for the forthcoming year of actual and forecasted quantities. The Inventory Annual Close job is executed once at the end of each calendar year.