AAOM Handbook

SC.12 Initiate Purchase Orders & Picking Slips Context The draft schedule must deliver the completion of every Task so that each Work Order is completed prior to its Required Date, regardless of any apparent constraint from plant or resource availability. All approved Tasks will be assigned a Scheduled Date/time and therefore a position in the schedule. The draft schedule, extending beyond the next few schedule periods, is reviewed on a regular basis by the work teams and continually evolves towards the final committed schedule. In the case of Tasks that require the purchase of materials or services, the purchase orders for these documents must be released prior to the lead time for supply of the materials or services. However, it is also desirable to consolidate purchase orders and deliveries so that materials and or services will be delivered in a coordinated fashion, when and where required, neither too early nor too late for the Scheduled Date of the work. In the case of Tasks that require the picking and issue of inventory items, the picking slips for these must be released in time for warehouse personnel to issue and place the items in the appropriate staging area prior to the work execution. As the draft schedule develops, the purchase orders that are near the lead time for the materials and services specified on them should be released for fulfilment, and the picking slips for inventory items should be released for issue of goods. Purpose To fulfil materials and services supply for Tasks just in time for the Scheduled Date of each Task. Quantity Each purchase order, that has reached the lead time for supply, activated for fulfilment. Each picking slip for inventory issues released for fulfilment. Quality Purchase orders shall be released in accordance with the supply system specifications, but in any case, ahead of the maximum expected lead time for the goods or services. Picking slips for inventory issues shall be released in accordance with the supply system specifications but in any case in time to allow for the orderly and efficient issue of the goods.