We are a manufacturing company which uses bills of materials these bills of materials contain sub-assemblies which all feed into the end product.
So sub-assembly A goes into sub-assembly B and both of these go into sub-assembly 3 and all the sub-assemblies go into the finished product.
All the sub-assemblies have raw materials to build the sub-assembly in production.
We are currently having a problem when we load a sales order and run MRP the planned orders are stepped. This stepped approach places works orders one after the other and scheduled dates are based on one sub-assembly being completed before the next one starts. If we have a sales order for 500 and the process quantities are set on the route when we run MRP these are the results we get below.
Item | Week 1 | Week 2 | Week 3 | Week 4 | Week 5 | Week 6 | Week 7 | Week 8 |
Prod 1 Item on sales order |
|
|
|
|
|
| 250 | 250 |
Sub-assembly C |
|
|
|
| 250 | 250 |
|
|
Sub-assembly B |
|
| 250 | 250 |
|
|
|
|
Sub-assembly A | 250 | 250 |
|
|
|
|
|
|
What we need to see is an overlap for one sub-assembly to the other as below.
Item | Week 1 | Week 2 | Week 3 | Week 4 | Week 5 | Week 6 | Week 7 | Week 8 |
Prod 1 Item on sales order |
|
|
| 250 | 250 |
|
|
|
Sub-assembly C |
|
| 250 | 250 |
|
|
|
|
Sub-assembly B |
| 250 | 250 |
|
|
|
|
|
Sub-assembly A | 250 | 250 |
|
|
|
|
|
|
Anyone has achieved this?
any ideas on how to make this work?
Thank you.