DDMRP or Demand Driven Material Requirements Planning is a formal multi-echelon planning and execution method to protect and promote the flow of relevant information through the establishment and management of strategically placed decoupling point stock buffers.
This new method is challenging decades old methods that are embedded in established ERP like SAP, Oracle etc
Developing a solution based on specification released by Demand Driven Institute is an opportunity for ERPNext commnunity.
More so because Odoo already has something on these lines. https://eficent.io/
We can help with understanding the business part of the opportunity.
Basic difference is for Make to Stock scenario - traditional approach is to take forecast as an input. DDMRP uses forecasts to impact the buffer design but the actual production orders and supply orders are generated based on actual consumption in the market.
Demand Driven Institute site has lot of whitepapers to explain the nuances.
The idea makes sense. But turning it into actual action points is where the value lies. Maybe actually look into what ERPNext offers, then do a gap analysis and present that. Otherwise this is going to go nowhere.
I guess it would have to be two ways. Those who are experts on ERPNext share their experiences on the challenges faced by clients when what is offered by ERPNext is getting implemented.
I have narrated the generic challenges with other ERPs.
Based on my reading, here are some points for ERPNext :
Have a more cable planning tool that prepares schedules for workstations on demand
The demand driven approach is about re-running the Planning tool, which can again schedule as per the changed demands.
It is also about controlling excess capacity and not overproducing from workstations. Overproducing leads to locking up of working capital.
I am not sure if ERPNext users who could be SMEs will be able to benefit from this approach. To me it seems suitable for large scale manufacturing/service industries.
I will go through the case studies. They seem very relevant.
I think ERPNext has the basic system in place, we might need some reports to begin with.
e.g Base on the British Telecom case study(British Telecom DDMRP Case Study on Vimeo) :
âPurchase Order Items to be Deliveredâ - report should have a column indicating average daily consumption, based on which Purchase Orders could be categorized and color coded.
If you can help and come up with such examples, you can then either post it here or create a github issue.
We are implementing such system for Bullows Paints Equipments, a user of ERPNext. We are using existing reports from ERPNext and have developed the solution on Excel.
One of the days if you visit the client site at Thane, we can demonstrate the same to you.
If you are logged in to github just follow this link Sign in to GitHub ¡ GitHub
You can set a title like [Feature Request] Demand Driven MRP report-
Then describe the following:
Why is it needed ?
How will it benefit your particular case ?
What needs to be done ? State it clearly. Here you put a screenshot of your excel file and describe the columns.
Also your can refer to the existing reports like Recommended Re-Order Level and Stock Projected Qty, etc, as it seems your report is a combination of these reports.
I am now working on migrating ODOOâs DDMRP module GitHub - OCA/ddmrp to erpnext, after 2 weeks hard work, the coding is almost done, planned to trial run and promote internally in the following months, any community members interested in this feature also? if enough interests from community, I would like to open source this custom app or contribute to the core.
I mean, yes. @deepaknagar, I and a bunch of other people would implore you to open source your code. If you want to push it to the core, thatâs awesome, but have it as an app to begin with at least.