Still Trying to Do MRP

Kinetic ERP
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I have a sales order with 16 releases over the next 12 months. The part has two details, setup as plan-as-asm. When I run MRP, it suggests 16 jobs to cover the demand for the top level part, and it suggests 16 jobs for each detail part. 48 total jobs!

In reality, we will look at the sales orders in a meeting and decide that we want to run this in three jobs, one in Q2, Q3, and Q4. I think we want to setup these jobs as make to stock (eventually we may need to split off quantities).

How can I get MRP to suggest jobs to cover the three main jobs that I want to run? I want to create three main jobs manually with my managers. Then run MRP to suggest the detail jobs in the correct quantities. Ideally, MRP only suggests 2 jobs for each of my main jobs. For a total of 9 jobs. How do I get here?

Thank you for your time!
Nate

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Write your main jobs to cover the quantities for each Q, and make sure it is scheduled to finish before the first demand for said Q quantity. That should result in your detail jobs being batched together to be finished in time to cover your manually written main jobs.

I think you could also accomplish this with MPS entries instead of manually written main jobs but there might not be much difference between the two.

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I’m new to this as well but believe, if you do make-to-stock on both top part and assy parts, you can set Days of Supply to 90 and it’ll combine all demand in rougly 90 day batches from your MRP start date. Check out the MRP techRef pdf for details.

EDIT - you can set DOS on assy parts only if you want to create top jobs manually and have MRP do detail jobs only. (do not check make-direct on Assy JobMtl on top BOM)

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@jbooker , you are somewhat correct. Days of Supply extends the window in which MRP will look. Doing what you say, there is a chance that he gets 179 days of supply in one job, depending on the cut off date that is set on MRP run.

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We can’t really use days of supply. I don’t think any of our quantities are consistent enough to hard code that kind of information.

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So I created the top jobs to cover the demand. But I had to make the jobs as make to stock, so they don’t link to the actual demand. Running MRP now still suggests all those jobs. Can I somehow link my demand to the job, while still making to stock? I am so confused…

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Is your sales order still Make to Order?

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Yeah could be wrong but it seems to create job suggs to cover +90 days from date part first drops below minimum. So upon first demand if min is zero. So it should work to batch irregular unpredictable demand into roughly 90day batches, No?

EDIT: oh i see what you mean, if on day 89 if sees demand below min it’ll create a job covering demand for 179 days out. Thats still a 90 day qty though so we’re good.

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Make Direct = True for all releases. Is that what you mean?

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No, it extends the window that the engine looks for demand.

As an example, let’s look at some scenarios with the following settings:

  • Cut Off Date: 2/23/2026
  • Schedule Start Date: 11/25/2025
  • DOS: 90

If the first demand in the system is 2/22/2026, the cut off date will get extended to 5/23/2026. So, it will cover 179 days of demand.

If the Allow Historical Dates is checked and the first demand in on 10/1/2025 and there is demand on 2/24/2026, those demands will not be combined.

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Correct. If you are telling the system to make the parts direct (make to order), it will ALWAYS create jobs to meet the demand. Regardless if there is stock or existing jobs that could meet the demand.

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There is a setting in the background somewhere to change this default, right? All my sales order releases are locked to make direct. The field is disabled with an override flag next to it. Once a sales order release is created, how can I uncheck Make Direct?

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You will need to delete any MRP suggestions or jobs that were created for that release.

You can also link one job to multiple releases. You do not need to use Make to Stock for the quarterly jobs if your shop is set up for make-to-order.

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First place to check is the Part record. If the Part is Non-Stock, it will always default to make direct.

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You need to be careful here. If you link multiple releases to one job, it will only schedule to the first release. So, you need to receive the parts to inventory to use any reporting for the subsequent shipments.

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That is what I was looking for! Those unfirmed job suggestions are locking the release. I review jobs suggestions in Job Status Maintenance. How can I delete job suggestions? I don’t see an option for it.

I need to use make to stock to allow future job splitting at arbitrary quantities. Otherwise job split quantity is limited to a single release.

DOH!!! That was it! Thank you! EDIT: Scratch that. My part is Non-Stock Item = False.

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Sure but the job sugg qty is 90days of demand from 2/22. I might not be describing it clearly but this is doing batches as we’d expect: On the date there’s make demand, make enough for 90days out.

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Just delete them in Job Entry.

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One by one? All the Unfirm job suggestion are linked to demand. So I can’t delete them outright.

I am not using min/max/safety or multiple. I also am not using days of supply. The original description of breaking demand into 4 quarterly jobs is just an example, not necessary what we actually will do.

I think I have to rerun MRP to get rid of those job suggestions. But I think it will just create them again. So I can’t change the order because its linked to a job, and I cant delete the job because its got demand. ugghh…

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Are you using Multiple, Min Lot Size, or both? I would argue that that is what is doing your 90 day batches. Once the system finds demand, it creates a job for X which happens to be a 90 day supply.