The shop order release date is the date that the shop order is scheduled to be released for production.

If you want to use the backward schedule method, make sure the release date is blank and the due date is maintained.

If you maintain the quantity on the shop order and the due date is prior to the system date, the due date and the release date are the same.

The system automatically performs offsets for requirements dates for components in the MPS/MRP calculations. It also performs offsets for calculation of material need dates at the time that shop orders are released.

To calculate the offset, the system takes the parent lead time from the Item Master and adjusts it by the bill of materials offset (plus or minus) for the component. This gives the lead time days for that specific component. The system starts with the due date of the parent and backs up and skips all non-workdays in the shop calendar.

Note that the offset calculation uses only calendar records that have a blank work center (the calendar record applies to all work centers). See the information for the Shop Calendar Maintenance program, SFC140, in your Shop Floor Control documentation for shop calendar details.

Companies are developing procedures for entering data into an ERP system and for archiving manuals, drawings, specs, and other hard-copy documents. However, in many cases there is no defined procedures to store historical electronic data. Archiving electronic data should be an integral part of your business processes. 

Generally, archiving is the process of moving historical data from the operational environment to a special archive environment. At home, you might move old bank statements from a closet in your study to a box in the attic. At the office, you might store old hard copies of purchase orders in a room far from your own desk. Just because you no longer need the information in your daily work, does not mean you can dispose of the information. In terms of electronic data in your ERP system, archiving means moving historic data from the operational company to a special archive company; in that way, the historic data will be out of your way and safely stored. To free up disk space on your machine after you have archived the data, you can also move the historic data to an external medium.

Archiving strategy:

You can block a warehouse for inbound procedures, outbound procedures, or both. For example, you can block inbound and outbound procedures for a warehouse if the warehouse must be closed temporarily for inspection.

You can impose these types of blockings:

• Full block: Full block on warehousing procedures.

• Interactive block: Override blocking allowed except blocks on confirm shipment or confirm receipt.

If you impose a full block on inbound procedures...