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AVEVA™ Manufacturing Execution System

Lot Attributes of Type Item Reason

  • Last UpdatedMar 19, 2016
  • 2 minute read

Lot attributes, of type Item Reason, can be used to implement multiple hold reasons for an item. During production, the produced items, organized by lot number, will be assigned an item grade and state through the use of an item reason. This grade and state information is used to determine if that lot meets the defined minimal shipping requirements. At the same time, attributes may be added to the production lot. An attribute of type Item Reason would allow the assignment of another grade and state to the same lot. Both grade and state combinations would be considered before shipment of an item from that production lot would be permitted. If used as a ‘hold’ reason, whenever the ‘hold’ situation is corrected, the lot attribute would need to be changed or removed in this window to allow the grade and state originally assigned to the lot to take precedence.

For example, a lot could be produced with the item reason of Good Production, which is linked to an item grade of Approved and an item state of Finished Goods. Both of those values have a preference of 1. The lot attribute Hold Reason could be assigned to the lot and given the value of Hold for Customer, which is linked to an item grade of Hold - Good and an item state of Finished Goods. The Hold for Customer state has a preference of 10. If the minimal shipping grade of this item was defined as 2, the lot attribute would prevent this lot of the item from being shipped. When the customer was ready for the shipment, the lot attribute could be removed and the item grade of Approved would become relevant.

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