As a matter of fact., I dont see as much of a need today to spit items between MPS and MRP, given the speed computers can regenerate MRP. My understanding is, 20-30-40 years ago, because MRP took hours to run, there was a need to cut the MRP generation process into a smaller subset of capacity critical or order critical items, the MPS items , and the other non-critical items: the MRP items. Any toughts on this?
Daniel Warthold----- Original Message ----- From: "Al Mac" <macwheel99@xxxxxxxxxxx>
To: "BPCS_L discussion" <bpcs-l@xxxxxxxxxxxx> Sent: Friday, October 20, 2006 1:24 AM Subject: [BPCS-L] Resell Purchased / Master Schedule ?
* One rule of thumb says MRP140 needs to "M" Master Schedule End Items that we manufacture and sell for customers, so that MRP will calculate what's needed of all components to be manufactured or purchased. * Another rule of thumb says raw material that we purchase to be used as components of the manufactured parts, nor any sub-components, should not be "M" coded, just the end items that we sell the customers. * A dispute has come up with respect to what is the correct Master Schedule coding for items that are coded purchased, but can also be sent customers as THEIR service or repair parts?It has been several years since we had MRP education, so different peoplememories stray into disagreements needing clarification.I had thought that when the raw materials show up as components of masterscheduled items, currently on customer orders, that MRP will correctly calculate how many we need thanks to both dependent and independentrequirements, but if a customer orders a supply of our raw materials, thatare not currently needed due to being in the BOM of master scheduledactive items, then by not having these raw materials master scheduled, wehave effectively told MRP to ignore these requirements, and that having extra items coded as master scheduled did no harm to MRP. We are on BPCS 405 CD mixed mode. We run MRP500 then MRP600 by facility, with a few extra runs of MRP500 thanks to a prior thread on BPCS-L regarding parts complexity.Our BOM has several levels. We used to be heavy into DRP resupply orders,but that part of our business is now about dad. - Al Macintyre http://en.wikipedia.org/wiki/User:AlMac http://www.ryze.com/go/Al9Mac BPCS/400 Computer Janitor ... see http://radio.weblogs.com/0107846/stories/2002/11/08/bpcsDocSources.html -- This is the SSA's BPCS ERP System (BPCS-L) mailing list To post a message email: BPCS-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change list options, visit: http://lists.midrange.com/mailman/listinfo/bpcs-l or email: BPCS-L-request@xxxxxxxxxxxx Before posting, please take a moment to review the archives at http://archive.midrange.com/bpcs-l. Delivered-To: daniel.warthold@xxxxxxxxxxxx
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