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Evo-ERP and DBA Classic >> Manufacturing >> MR-F Generate Mtl Req
http://www.istechforum.com/YaBB.pl?num=1106953376

Message started by sunmfg on 01/28/05 at 15:02:56

Title: MR-F Generate Mtl Req
Post by sunmfg on 01/28/05 at 15:02:56

It appears to me that MR-F looks at both Sales orders and Work orders and adds the requirements together. I have a sales order for 100k parts and a work order is in process for 100k parts, and MR-F thinks I need material for 200k parts. I get the same result regardless of Y or N to "Include S-type Work Orders?"

How do I make it give me a true answer?

Thanks,

Wayne Walkup
Sun Manufacturing, Inc.
Coweta, Oklahoma

Title: Re: MR-F Generate Mtl Req
Post by Lynn Pantic on 01/28/05 at 20:02:48

I suspect it is due to your Expedite buffers being too small - the WO is not scheduled for completion close enough to the ship date of the SO - therefore the MR-F figures the WO must be for something else and is trying to generate another WO to satisfy the SO.

MR-F needs several things to be accurate/reasonable to produce logical results:
1. On Hand Inventory to be accurate
2. BOM to be accurate
3. Inventory Lead times to be accurate, or at least reasonable
4. SO, WO and PO dates to be accurate
5. Expedite buffers to be large enough to handle any mismatch

Title: Re: MR-F Generate Mtl Req
Post by Juan on 02/01/05 at 06:01:51

How large of buffers?

Title: Re: MR-F Generate Mtl Req
Post by sunmfg on 02/02/05 at 11:35:06

I've been thinking about what you said, "the WO is not scheduled for completion close enough to the ship date of the SO". A good portion of our business involves weekly releases against blanket orders, where 10 - 12 weeks may be on order at any given time. And because the stamping business is measured in truckload quantities, a work order quantity depends on how much of that items raw material made it on the inbound truck.
So, there is one WO completion date that fills maybe 5 - 6 of those SO ship dates. They will never match. Then along comes another months releases, so how much raw do I need to get on the next truck and when?

It seems that the mrp equation would be simpler if just sales orders were considered for requirements, excluding work orders that are there to help fulfill those requirements.

Would it be tough to provide that option?

Thanks,

Wayne Walkup
Sun Manufacturing, Inc.