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Master Plan Net Requirements

  • 1.  Master Plan Net Requirements

    Posted 10-05-2018 07:05 PM
    ​​We have loaded the forecast for a finished good and use the net requirements window to review the planned production as well as the planned purchase orders for the raw materials of this finished good.

    We are trying to figure out why the Demand Forecast for Feb. 2019, March 2019 and April 2019 are being planned to produce Jan 2019.  Because the Production is not being scheduled in the correct month all of the raw materials we require to manufacture the item is being call for in Jan instead of the month the forecast is entered for.

    Any help or suggestions as to how Master Planning determines when to produce the demand forecast would be helpful




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    Tim VonderMuhll
    Purchasing Manager
    Canterbury Coffee Corporation
    Burnaby BC
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  • 2.  RE: Master Plan Net Requirements

    TOP CONTRIBUTOR
    Posted 10-08-2018 08:32 AM
    Looks like some sort of calendar problem, where one of the calendars being used probably doesn't have 2019 built out yet. I'd check first under organization/workday calendars, because that's one that's easiest to overlook. You might very well have dates defined as open/closed going out for years, but you separately have to build the workdays in order to nail down shift start/end times.

    Less likely would be a specific resource constraint, though that again is probably a calendar issue, meaning the operation or job can't be scheduled into 2019 because of lack of available resources, so the production is planned early and using what's left of your 2018 capacity.

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    Chan Stevens
    Industry consultant
    Cincom Systems
    Cincinnati OH
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  • 3.  RE: Master Plan Net Requirements

    GOLD CONTRIBUTOR
    Posted 10-08-2018 12:58 PM
    ​Tim:
    Calendars is a great first check, as suggested. However, I would expect an error message saying the system couldn't find capacity to schedule if calendars ended: check your MRP session log if you haven't already.

    For the items in question, check coverage group setup to see if you are using period coverage for the impacted item(s). If you had a long coverage period, it would pull in orders from the first demand out that number of days: if you had 90 days, for example, you would build all 90 days of demand to the first requirement date.  Also check forecast plan setup.

    Some additional information about planning setup would be helpful if you haven't found the answer with these first couple responses.


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    Shelby Wright
    Sr. ERP Business Analyst
    Leatherman Tool Group
    Portland OR
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  • 4.  RE: Master Plan Net Requirements

    Posted 10-08-2018 02:20 PM
    ​Calendars and Item Coverage are good to check but I would also suggest checking your routes. Your parts per hour could be setup incorrectly which could result in AX wanting to plan farther back in order to meet demand.

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    Michael Foss
    Functional/Business Systems Analyst

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  • 5.  RE: Master Plan Net Requirements

    TOP CONTRIBUTOR
    Posted 10-09-2018 08:25 AM
    Looking at the screen shot originally provided, it's surely not coverage group or route problems, as there are multiple planned orders scheduled roughly monthly with same volume. Also, the "resources can't be found" error message would only occur if the operation/job scheduling process failed to find ANY available resource, would not occur if resources were found, albeit months ahead of required date.

    If it's not a calendar issue, then a close second in my book would be a resource count issue, where some number of currently available resources are no longer available in 2019, meaning the resource/group assignment has an expiration date, but that seems pretty unlikely...

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    Chan Stevens
    Industry consultant
    Cincom Systems
    Cincinnati OH
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  • 6.  RE: Master Plan Net Requirements

    Posted 10-09-2018 02:52 PM
    ​Thank you everyone for your suggestions.  It was the Calendar setup that was being used in Master scheduling that was causing this issue.  Once we loaded the calendar for 2019 and reran master planning it scheduled the planned production in the proper month.

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    Tim VonderMuhll
    Purchasing Manager
    Canterbury Coffee Corporation
    Burnaby BC
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  • 7.  RE: Master Plan Net Requirements

    GOLD CONTRIBUTOR
    Posted 10-10-2018 09:42 AM
    Hi -

    I would also check LCS and ensure your environment has all the big MRP KBs. There has been a lot of MRP work lately (past year) and even yesterday there was a key MRP KB published to LCS (released 8/3).

    MRP sporadically slow due to ReqTransNeutralDelete\run SQL queries
    AX 2012 R3 | Application update
    KB 4345734 released 8/3/2018


    We see a steady business of MRP customers in trouble, often at the worst of times, that could have been averted by simply staying on top of MRP patches.

    Also, update your kernel. I would do that first. The scheduling DLLs found in the kernel are used by MRP.

    In addition to the great suggestions already made, I usually look at this table.

    select * from WRKCTRCAPRES nolock
    where DATAAREAID = 'ceu'
    and WRKCTRID = '00101'

    Thanks.....Dave

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    Dave Phillips
    Sr Support Escalation Engineer
    Microsoft
    Fargo ND
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  • 8.  RE: Master Plan Net Requirements

    TOP CONTRIBUTOR
    Posted 10-11-2018 09:32 AM
    Dave,

          First off thanks for all the help you have provided in the past to us on this very subject.

           Is there are convenient blog or something that list out the key MRP patches?

           Current R2 hotfixes act very much like a CU,  meaning each one includes hundreds/thousands of dependencies.   Is there any chance of getting key hotfixes (like the MPR ones) extracted so they are easier to apply?

    Regards,

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    Corey Vantilborg
    ERP Analyst
    Tigercat International Inc.
    Brantford ON
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