Recalculate work order FDMA

Use this function to refresh calculated earliest operation start dates to reflect changes to component availability.

The FDMA is the "First Date of Material Availability". This is the date calculated for each component of a work order when component availability can cover, in full, the required quantity. The earliest operation start date is calculated from the component FDMA. For each operation on the work order, this is the date when the full quantity of each component required for the operation is available. Frequently, however, stock movements affect the calculated, or suggested First Date of Material Availability. A purchase receipt might be delayed in transit, for example, thereby affecting the availability of the material required for a work order; a defect might be detected in a component on the shop floor resulting in a break to the processing while a replacement component is sourced.

The FDMA is one of several constraints the Production Scheduler function (FUNPSSCH) can use for optimizing the operations. Production Scheduler, however, does not automatically recognize changes to work order component availability. You should therefore run this function frequently so that Production Scheduler observes changes in material availability in subsequent optimizations.

 You are advised to run this function frequently and especially after any known change to a component availability date. It is the planner's decision how often, for which work orders, and when this should happen.

 You can integrate this function in the batch server so the FDMA recalculation starts regularly. For example, you might choose to run this function overnight or at a regular time based on updated trackings, receipts, or MRP calculations.

Production Scheduler is only available for on-premises instances of (missing or bad snippet). If the POPS–Production Scheduler activity code is clear and the GFS–Finite scheduler activity code is selected, you are using the generic Finite scheduler interface to (missing or bad snippet) Web Scheduling or to a web scheduling solution developed by an ISV (independent software vendor) for either cloud or on-premises solutions. You need to use the Finite scheduler > Recalculate work order FDMA function (FUNGFSFDMAUP) instead of this function.

Prerequisites

SEEREFERTTO Refer to documentation Implementation

Screen management

The Recalculate work order FDMA function displays 2 selection screens:

  • An initial screen for you to enter your selection, or filtering criteria.
  • A validation screen for you to confirm the work orders to refresh.

A log file displays the results of the refresh.

Entry screen

Type in, or select the site at which to refresh work orders, then select the work orders statuses to refresh.

A number of ranges are displayed.

  • To select all work orders to the selected stage of the production cycle, leave all the fields blank.
  • To select specific work orders to the selected stage of the production cycle, type in the required ranges. Leave the first field blank to include the lowest value or the second field blank to include the highest value.

You can optionally select the work orders by applying a calculation formula.

Selection criteria

Production site (field MFGFCY)

Type in or select the work order production site.

The production site defined on the user record is displayed by default but you can edit it.
Formula (field FORMULE)

Enter, select, or build a (missing or bad snippet) filter calculation expression using the formula editor.

 An error message is displayed if you refer to tables which are not generally used by the configurator, or to unknown variables.

Status

Work order status (field WOSTATFLG)

Filter for results within a range of work order statuses. Selection respects the lowest stage to the selected stage of the work order in the production cycle, as follows:

For work orders incl. status 'Being optimized': All work orders that have been submitted to Production Scheduler for scheduling but have not yet been included in a "published plan".

For work orders incl. status 'Optimized': All work orders submitted to Production Scheduler that are currently being optimized for scheduling or have been included in a published plan but production has not yet started.

For work orders incl. status 'In progress': All work orders submitted to Production Scheduler for scheduling. This includes all work orders that are currently being optimized for scheduling and those that have been included in a published plan, whether production has started or not.

The work order status values are defined in the 339–Work Order Situation local menu.

Work order

Work order no. (field MFGNUMDEB)

Filter for results within a range of work orders. For a single work order, enter the same work order in the from/start Work order no. (Work order number) and to/end Work order no. fields.
Released product (field ITMREFDEB)

Filter for results within a range of finished products (BOMs). For a single bill of material (BOM), enter the same product code in the from/start Released product and to/end Released product fields.
Start date (field DATDEB)

Filter for results within a range of dates. For a single day, enter the same date in the Start date and End date fields. You can leave the Start date field blank to search all records to date.
End date (field DATFIN)

Filter for results within a range of dates. For a single day, enter the same date in the Start date and End date fields.
Project (field PJTDEB)

Filter for results within a range of project codes. For a single project, enter the same project code in the From/start project and To/end project fields.

If the value of this field includes a character such as an exclamation mark "!" this field links to the structure of the project. The character is the separator between a project code and the structure, either the project budget structure or the project operational (task) structure. For example, if a material task code is "USA-P3" and a project code is "USA12345678", this field displays a link to the project operational structure as "USA12345678!USA-P3".

To provide a quick and easy visual reference the link to the project or project structure is distinguishable by the number of separator characters used. If there is no separator, the link is made to the project. A single separator character such as an exclamation mark after the project code (the first code) indicates the link type is a task (the link is to the project operational structure). Two separators placed after the project code mean that the link corresponds to a budget code (link to the project budget structure).

WOs using material/component

Product (field ITM)

Enter or select a component code to filter for work orders containing the component.
Major version (field MAJVER)

Indicates which version of this component (material) applies. Major versions might be used where there have been increased or significant changes to the original or previous version, that is the "form, fit, or function" has changed.

This field is not populated if the component code defined in the Component or Material field is not version managed.
Material requirement (field MATREQDEB)

Filter for results within a component requirement date range. For a single day, enter the same date in the from/start Material requirement and to/end Material requirement fields. You can leave the start Material requirement field blank to search all records to date.

Selection screen

You use this screen to confirm the details of the work orders to be refreshed.

To exclude a specific work order, leave the checkbox clear or select Delete from the Actions icon.

A log file displays the results of the refresh.

Block number 1

Production site (field MFGFCY)

The selected work order production site.

Grid

field FMODIF

Select the checkbox to select the line.
Order no. (field MFGNUM)

The work order number.

Order status (field MFGSTA)

Indicates the status of the work order. The status can be Pending, Being optimized, or In progress.
Scheduling status (field SCDFLG)

Indicates the current stage of the work order in the scheduling process. The status can be Scheduled or Optimized.
Released product (field MFGITM)

The product code describes a bill of material (BOM). A BOM contains structured information for making and costing a product. It defines the components that make up a product, and given this, the cost of the product.

The BOM code matches the product code.
Start date (field STRDAT)

Identifies the planned or actual production start date of the work order.
End date (field ENDDAT)

Identifies the end or required completion date for the work order.
Work orders

Select Work orders from the Actions icon to view the work order details.

Specific actions

Select the Recalculate action to recalculate the First Date of Material Availability (FDMA) and reschedule the selected work orders. The calculated earliest operation start date will be adjusted to reflect changes to component availability.

A log file displays the results of the refresh.

Select the Include all action to select all displayed work orders.

Select the Exclude all action to clear all selected work orders.

Error messages

The only error messages are the generic ones.

Tables used

SEEREFERTTO Refer to documentation Implementation