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After CU12 - Safety stock replenishment to early

  • 1.  After CU12 - Safety stock replenishment to early

    Posted 10-04-2017 05:03 AM

    ​Hi AXUG members!

    I have discovered when we upgraded environments to CU12 for AX2012 R3 we have problems with replenishment of safety stock (minimum). Planned orders for replenishments occurs to early.
    Have other noticed the same problem as us? I can reproduce the problem below alos in our Contoso running on CU12.

    In a copy of production data in an environment running on CU12

    1. A sales order is placed in 31st of January in 2018.
    2. After Master scheduling update
      • planned planned production order to refill Safety stock Todays date + replenisment lead time 10 days. 2017-10-13. (Requirement date Safety Stock 2017-10-13 + 1 day for receipt margin + weekend). The planned order is Pegging against Safety stock
      • Sales order Pegging against On Hand

     

    Question is - why refill already now?

    • Same scenario occurs if there is demand forecast entered instead of a sales order.
    • This happened after CU12. We had other envrionment running on CU11 before and did not have this problem.
    • I can reproduce same scenario in our Contoso that is running on CU12
    • My guess it is related to the KB3190607 in CU12 named "Safety stock is pegging inventory to itself, causing other demand types to delay". I have no more detailed information about what does this KB actually fix.
    • Impact if we switch to CU12 in our Production environment there will be planned orders to replenish our stock to early. Over production and our planners will not be happy when they cannot trust the suggestions after master scheduling.

     

    Compare with copy of our existing production data in an environment running in on CU10.

     

    1. A sales order is placed in 31st of January in 2018.
    2. After Master scheduling update a planned planned production order to meet the Sales order demand in January

      

    Item coverage settings for the item except for the set up tab in net requirement pictures above:  Fulfill minimum: "Today´s date + procurement time

    BR

    Martin



    ------------------------------
    Martin Axelsson
    Senior Specialist
    Alfa Laval Lund AB
    Lund
    ------------------------------


  • 2.  RE: After CU12 - Safety stock replenishment to early

    GOLD CONTRIBUTOR
    Posted 10-04-2017 10:06 AM
      |   view attached

    Hi Martin –

    You are correct. KB 3190607 (6.3.4000.2691) was introduced in CU12.

    "Safety stock pegs inventory to itself. Therefore, other demand types are delayed. KB 3190607.
    This hotfix causes safety stock to be the last type of demand that is fulfilled during a master planning regeneration. Note that this fix applies only to regeneration."

    See attached PDF.

    This KB has proved problematic for some customers, so a private fix has been created. To get the private fix contact MSFT support in your region (generally via your partner) and provide them this information…

    DAXSE 3855720 (CR) - [Private fix] Temporarily revert Rolling Safety Stock code change (for non-Shelf Life Customers).

    MSFT continues to explore the impact of KB 3190607.

    Thanks….Dave



    ------------------------------
    Dave Phillips
    MSFT Senior PFE
    Microsoft
    Fargo ND
    ------------------------------

    Attachment(s)



  • 3.  RE: After CU12 - Safety stock replenishment to early

    Posted 10-05-2017 09:54 AM

    ​Thanks Dave!

    We will ask our consultants about the fix.

    BR
    Martin



    ------------------------------
    Martin Axelsson
    Senior Specialist
    Alfa Laval Lund AB
    Lund
    ------------------------------



  • 4.  RE: After CU12 - Safety stock replenishment to early

    SILVER CONTRIBUTOR
    Posted 10-05-2017 07:48 AM
    Not sure why on-hand would be pegged to the sales order, it should be pegged to the first demand.  But I have seen similar issues with not wanting to refill just to satisfy safety stock demand.  Have you tried using the fulfillment type of "First Issue"?  It will push the date of the safety stock to match the first demand date, so the planned order will be satisfying both (or with on-hand as well) and if there is no real demand, there will be no planned order if safety stock is the only demand.

    ------------------------------
    Robert Stogner
    I.B.I.S. Inc., a Sonata Company
    Burlington NC
    ------------------------------



  • 5.  RE: After CU12 - Safety stock replenishment to early

    Posted 10-20-2017 08:26 AM
    ​Hi!
    We have now installed the fix DAXSE 3855720 (CR) - [Private fix] Temporarily revert Rolling Safety Stock code change (for non-Shelf Life Customers).

    With positive results! Safety stock replenishment when needed and not building unnecessary stock.

    I have attached my tests from an environment with the same items before and after fix was installed. This time with an item FG that consist of a bom line SFG with safety stock 10 pcs and 10 days leadtime. SFG consist of one compent Raw material purchased with 30 days lead time.

    Before fix in CU12
    Before fix
    After CU12 Fix
    After cu12 fix
    /Martin

    ------------------------------
    Martin Axelsson
    Senior Specialist
    Alfa Laval Lund AB
    Lund
    ------------------------------



  • 6.  RE: After CU12 - Safety stock replenishment to early

    GOLD CONTRIBUTOR
    Posted 10-20-2017 08:52 AM
    Hi -

    Thanks for the follow up Martin.

    Regards.....Dave

    ------------------------------
    Dave Phillips
    MSFT Senior PFE
    Microsoft
    Fargo ND
    ------------------------------



  • 7.  RE: After CU12 - Safety stock replenishment to early

    GOLD CONTRIBUTOR
    Posted 02-02-2018 08:49 AM
    Hi -

    KB 4074644 "Master planning improvements in relation to safety stock" was published a few days ago.

    https://fix.lcs.dynamics.com/Issue/Resolved/1230197?kb=4074644&bugId=3888001&qc=9d40487402400689fd2a4e1acc8cc4c23d43d3b0a74d83411ad8bad63fcdbf6c

    Thanks.....Dave

    ------------------------------
    Dave Phillips
    Sr Support Escalation Engineer
    Microsoft Corporation
    Fargo, ND
    ------------------------------



  • 8.  RE: After CU12 - Safety stock replenishment to early

    SILVER CONTRIBUTOR
    Posted 12 days ago
    Dave,

    I know you say the hot fix listed addresses the issue but I have the hot fix installed with the same result.

    ------------------------------
    Brent Hester
    IT Manager
    Kason Industries
    Newnan GA
    ------------------------------