Calculating Lead Times

You can calculate manufacturing lead times for one item, a range of items, or a category of items. The calculation updates the lead time attributes of all manufacturing items that you include, regardless of whether you manually maintain an item's lead times.

Additional Information: Leadtime for items with network routings is calculated using only resources on the primary path. For more information about network routings, see: Creating a Routing Network and Creating a Network Routing, Oracle Shopfloor Management User's Guide.

Lead Times By Item Category

You can limit the items included in the manufacturing lead time calculation by specifying an item range or item category range when you submit the manufacturing lead time program. Using item categories, you can segregate the manufactured items whose lead times you manually maintain from those items you include in the manufacturing lead time calculation. You can also limit the parent items included in the cumulative lead time calculations by using item categories.

Recomputing Lead Times

Changes to routing and resource usages can impact an item's lead times. After each change you make to a routing (adjusting usages, adding operations, and so on), recalculate the manufacturing lead time for the item.

Perquisites

You must define a bill of material for the parent item and member items who's lead time is to be calculated. See: Creating a Bill of Material.

You must define a routing for each item that will be used in the lead time calculation. See: Creating a Routing.

You must define a lead time lot size for the parent item who's lead time is to be calculated. See: Creating a Routing.

To calculate lead times:

  1. Navigate to the Calculate Lead Times window. See: Submitting Requests.

  2. Select a Type:

    Request: calculate or roll up lead times without a report.

    Set: calculate lead times and produce either the Bills of Material Structure Report or the Routing Report.

  3. If you selected Set in the previous step, select one of the following:

    Calculate Cumulative Lead Times Set GUI: calculates cumulative lead times and produces the Bills of Material Structure Report.

    Calculate Manufacturing Lead Times Set GUI: calculates manufacturing lead times and produces the Routing Report.

    If you selected Request in the previous step, select Calculate Manufacturing Lead Times.

  4. Indicate arange of items or a specific item.

  5. If you chose a specific item, enter the item.

  6. Optionally, enter a revision for the item.

    Enter the date and time to snapshot the bill or routing. All data effective as of this date and time are included in the calculation.

  7. If you chose to calculate lead times for a range of items, enter a beginning and ending range.

  8. If you chose to calculate lead times for a range of items, you may enter a category set to calculate the lead times of the items associated with this category set. The default is the category set you defined for your functional area.

  9. If you chose to enter a category set, enter a beginning and ending category.

Changes to the indented bill of material and component lead times can impact a parent item's cumulative lead times. After each change made to a bill (adding components, assigning to a different operation, and so on) or the item lead times, roll up the cumulative lead times.

To roll up cumulative lead times:

  1. Navigate to the Calculate Lead Times window. See: Submitting Requests.

  2. Select Request for the Type.

  3. Select Rollup Cumulative Lead Times for the Name.

  4. Indicate a range of items or a specific item.

  5. If you chose a specific item, enter the item.

  6. Optionally, enter a revision for the item.

  7. Enter the date and time to explode the bill of material.

  8. If you chose to roll up cumulative lead times for a range of items, enter a beginning and ending range.

  9. If you chose to roll up cumulative lead times for a range of items, you may enter a category set to roll up the cumulative lead times of the items associated with this category set. The default is the category set you defined for your functional area.

  10. If you chose to enter a category set, enter a beginning and ending category.

    Attention: You can calculate lead times from the Routings form, when creating or updating a routing. See: Creating a Routing.

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