Setting up the VAPS

How to set up EMAD calculation

A few settings are needed for doing an EMAD calculation

When you want to set up an EMAD (= Earliest Material Availability Date) calculation, you need two settings:

  1. Define the "Look ahead window" i.e. specify how far from now (= today) you would like to allocate component supply to component demand. This is done in the "VAPS Setup":

    VAPS-open setup

  2. Define which kind of demand type should get supplied first, second, third, etc. This is done in the "EMAD Demand" dialog under "Manage -> Edit List". Here you can also change the priority order:

VAPS-emad-priority

Consider the EMAD on the production order routing line level

Without any further specification, the VAPS calculates the EMAD just on production order line level. Hence, there is no EMAD per operation at all.  You can, however, have the VAPS also consider routing links so that the EMAD can be calculated by the production order routing line which means that a production order line can be started even when the material for one (or more) operations is not yet available. This option has to be switched on the VAPS Setup page:

VAPS -use routing links for EMAD calculation

Exclude item type “Non-Inventory”


By clicking the according option, you can specify that the item type “Non-inventory” is to be excluded from the EMAD calculation.

VAPS -exlude non-inventory from EMAD calculation

Consider EMAD in semi-automatic scheduling

The VAPS offers two semi-automatic scheduling tools, the functions "Add all" and "Fill idle times" either with or without taking into account the EMAD. The settings below make sure that these functions work properly. All settings can be found in the VAPS Setup:

    Apply EMAD tolerance to an item

    As is commonly known, the EMAD calculation provides a date from which the required quantity of component demand is available and before which the production order must not start. The newly implemented EMAD tolerance allows defining the criterion not too narrowly so that, e.g., an order could already start if only 95% of the required material is available.

    To be able to do so, we have enhanced the item card with the respective setting option. When calculating the demand, the entered value is multiplied by the available quantity.

    VAPS - apply EMAD tolerance

    Shortcut to EMAD demand

    We enhanced the Item card so that you can directly navigate to the EMAD demand entries.

    VAPS EMAD demand from item card

    Run EMAD calculation from Job Queue

    With the help of the Business Central job queue, you can schedule certain background jobs for regular execution. The EMAD calculation, which until now could only be called via the VAPS (interactively with - depending on the data volume - long calculation times), can now be triggered via the job queue as soon as the VAPS is installed. Thus, it could be run at night, for example,  without supervision and without needing someone to log on to the system to start the VAPS.

    Setting up the job queue has to be done within Business Central by the administrator.