web
You’re offline. This is a read only version of the page.
close
Skip to main content

Notifications

Announcements

No record found.

News and Announcements icon
Community site session details

Community site session details

Session Id :
Dynamics 365 Community / Forums / Microsoft Dynamics AX (Archived) / Master Planning doesn&...
Microsoft Dynamics AX (Archived)

Master Planning doesn't explode item in sub levels

(0) ShareShare
ReportReport
Posted on by add

Hello guys,

  We have updated to Dynamics AX 2012 R3 CU12 from Dynamics AX 2012 R3 CU10 two weeks ago and since then our Planning department has complained about the Master Planning functionality. It seems like it doesn't explode the item in sub levels meaning that it doesn't create the planned orders as expected. When we use Explode manually it works fine. It explodes the item with all expected sub levels. We haven't changed any of the settings from the old version. Is it a matter of settings or it is some kind of bug? Has anyone seen this before? Any info would be greatly appreciated. Thank you!

*This post is locked for comments

I have the same question (0)
  • Carlo Severini Profile Picture
    Carlo Severini 95 on at

    Check this out:

    https://blogs.msdn.microsoft.com/axmfg/2015/12/22/support-for-boms-that-includes-items-with-different-product-dimensions-of-the-same-item/

    Important implementation note
    Ensure that the reqItemLevel table is empty before the first MRP (Master Schedule) run. Any change, like creating or modifying an item, will generate entries to the table and as a result it will not be empty.
    The simplest way to do this is to truncate the reqItemLevel table, and then run a full MRP (regenerative with no filters). Otherwise MRP will not generate any planned orders!

  • add Profile Picture
    add on at

    Hello Carlo,

    We have tried cleaning the reqItemLevel table and then running Master Planning but still no result. In Planned Orders -> View -> Explosion -> Overview tab, the item still has only one level and it should have many. It works fine when we manually explode every level. I could provide screen shots but I can't find the 'Attach' button here, sorry :)

  • Suggested answer
    guk1964 Profile Picture
    guk1964 10,888 on at

    Check your calendars -  if you run master scheduling and calendar days are not open, then no Net requirements/Planned orders will be created against the items.

    Check mrp plan explosion fence setting  is not overriding coverage group setting

    Maybe try tracing the mrp run https://technet.microsoft.com/en-us/library/jj677369.aspx to see what the logs show

  • add Profile Picture
    add on at

    Hi Magic,

    Our calendar days are open and the fence setting is ok. Also we have removed any filter applied to the batch job, checked the Plan settings, and ensured warehouses are not set to manual. I have generated a tracing MRP log and I'm looking at it but still can't find anything useful. For additional info I can add that when we do Master Planning some items are not exploded at all and others are exploded but not fully (there are levels missing).

  • Suggested answer
    guk1964 Profile Picture
    guk1964 10,888 on at

    Long shots:

    • check the out effectivity dates of the lower level boms.
    • check the  Default order type on BOMS or Sub Boms is not set as setup as “Purchase Order” instead of “Production”  - that would stop a  “Sub-BOM or formula”assigned to the created BOMs which dictates the explosion of lower levels.
    • ensure time fence is not zero for the affected lower level items for all 3 of these settings: - plan/coverage group/item group coverage,
    • check the affected items do not have zero lead times
    • double check calendar
    • tick the "Enable trace' on the Explanation tab and see if that tells you anything.
  • Suggested answer
    Weaveriski Profile Picture
    Weaveriski 23,620 Moderator on at

    Press actions, go to Rich Text and then add the screen shots.

    When I had this previously it was all to do with an interface, the customer created the production orders but not the related production inventory transaction. I presume you have checked any differences between a manually created production order (then run planning) and one that is planned, and one that is planned and firmed. Try all three scenarios - do they all not explode?

    If they dont what is the explode flag on the calculation group of the item set to and what is the explosion time fence?

  • guk1964 Profile Picture
    guk1964 10,888 on at

    The calculation group has nothing to do with mrp logic.

  • Weaveriski Profile Picture
    Weaveriski 23,620 Moderator on at

    On the whole I would agree with you, but also when you read help like this from Microsoft there are times it may not have had nothing to do with it:

    You can prevent master scheduling calculations from exploding requirements through the item by selecting the stop explosion flag (for item coverage) for the item. The master scheduling calculation will treat the item as a purchased item and will not perform more calculations for its bill and route information.

    In AX2009 there was a stop explosion flag on the released product, this is no longer there in AX2012 and was moved to indicate the treatment of an item as "purchased" within a BOM rather than blowing through the costs. The user is on CU12, I dont have a copy of that version or the setup, so the suggestion was to check

    [View:https://technet.microsoft.com/en-us/library/gg232436.aspx:750:50]

  • add Profile Picture
    add on at

    Hello,

    We have some progress. I cleared all the tables mentioned here (action 10) + the reqItemLevel table that Carlo suggested. And after that Master Planning exploded all the items except the last level. This level are all items from one specific group. I am thinking maybe there is some table that I am missing and it also has to be cleaned. Any ideas?

  • Weaveriski Profile Picture
    Weaveriski 23,620 Moderator on at

    Which "group" would be my next question, along with "Are you in anyway filtering MRP?".

Under review

Thank you for your reply! To ensure a great experience for everyone, your content is awaiting approval by our Community Managers. Please check back later.

Helpful resources

Quick Links

Responsible AI policies

As AI tools become more common, we’re introducing a Responsible AI Use…

Neeraj Kumar – Community Spotlight

We are honored to recognize Neeraj Kumar as our Community Spotlight honoree for…

Congratulations to the November Top 10 Community Leaders!

These are the community rock stars!

Leaderboard > 🔒一 Microsoft Dynamics AX (Archived)

#1
Martin Dráb Profile Picture

Martin Dráb 4 Most Valuable Professional

#1
Priya_K Profile Picture

Priya_K 4

#3
MyDynamicsNAV Profile Picture

MyDynamicsNAV 2

Last 30 days Overall leaderboard

Featured topics

Product updates

Dynamics 365 release plans