Concepts for Inventory data

The following list includes important concepts for Inventory.

• Equipment is one of the important elements of the three foundational ISA-95 models: Personnel, Equipment, and Materials. The types of equipment are Enterprise, Site, Area, Work Center, and Work Unit.

• A work center is an element of the plant hierarchy that represents the location of a process type, the location of a group of equipment, and the location to record the movement of materials. You would typically name a work center with the name of the respective process, such as Stockpile 2, Gear Assembly 3, or Warehouse 4. A work center also specifies how a material lot queues to enter or leave the work center.

• The work unit category of items are sub-items of work centers. There are three types: Unit, Storage Unit, Work Cell.

• A material is a substance that the plant uses or produces, such as raw materials, work-in-process, and finished goods.

• A movement event is a request for an Inventory operation to occur. These Inventory operations can include material movements, material class movements, balance adjustments, and survey adjustments. AVEVA Production Management stores all original movement requests, which are later processed into movement records. You can view movement events in the Movement Events view before processing the requests. After processing, the processed records appear in the Movements view.

• A movement record is the result of a movement event after processing has occurred. These Inventory operations can include material movements, material class movements, balance adjustments, and survey adjustments. You can view movement records in the Movements view of Production Analyst.

• A lot is a uniquely identifiable amount of material for which a single set of measurements defines the composition, quantity, and process characteristics. For accounting and production control purposes, the plant treats a lot as a unit in processing. With AVEVA Production Management, you can generate unique identifiers for lots, and you can configure AVEVA Production Management to track them at key measurement points known in AVEVA Production Management as items of equipment.

• A lot group enables you to define specific lots as being related to each other, or belonging to the same group. When lots are moved in and out of items of equipment, this can impact the queue behavior. You can specify that lots belonging to a specific lot group are prioritized in the queue.

• A lot generator is a configurable expression that enables you to configure how lot identifiers are created. For example, a specific format of XXX-yyyy-mm-dd HH00 where XXX is the material code.

• A material conversion is an expression that specifies how AVEVA Production Management converts a quantity of source material to a quantity of destination material when the units of measurement differ. For example, when the source material is measured in liters and the destination material is measured in kilograms. The primary use is when instrumentation is not available to get an accurate value.

Related topics

• Understand how Lot groups affect queuing

• About reprocessing

• About Inventory