MRP reduce coverage stock
This parameter determines when Material Requirements Planning (MRP) should generate suggestions if coverage periods are used for products managed in stock.
For every transaction in a coverage period (expressed in weeks), MRP compares the resulting stock level and the reorder lead time with actual requirements (orders). If the stock level on the date of the planning run (MRP processing (FUNMRPG), field Reference date) plus the reorder lead time is too low MRP can generate a suggestion. The date for the generated suggestion will be the date of the planning run.
'No' (default) - The MRP process must analyze the requirements inside the coverage period and generate a suggestion to cover demand.
'Yes' - The MRP process must analyze the requirements inside one coverage period and only generate a suggestion at the start of that coverage period. It must ignore changes to demand until the start of the next coverage period.
Example
Product A
Coverage: 5 weeks
Safety stock: 0
Start stock: 0
Production lead time: 1 week
Requirements expressed: Per week for 10 weeks
MRP results with MRPRECOVST=No (default)
Coverage is used for products managed in stock. When the MRP process is run with coverage, this means that the requirements inside the coverage period are analyzed in order to issue a global suggestion. Coverage can slide. The suggestion is placed at the start of the coverage period, that is, at the earliest one coverage period before the requirement date.
| W0 | W1 | W2 | W3 | W4 | W5 | W6 | W7 | W8 | W9 | W10 |
SOF |
| 50 | 250 | 100 | 50 | 105 | 105 | 150 | 250 | 125 | 125 |
WOF |
|
|
| 100 |
|
|
|
| 100 |
|
|
WOS | 350 | 105 | 105 | 150 | 150 | 125 | 125 |
| |||
Projected stock | 350 | 405 | 260 | 410 | 510 | 530 | 550 | 400 | 250 | 125 | 0 |
MRP results with MRPRECOVST=Yes
The requirements inside the coverage period are analyzed in order to issue a global suggestion. The suggestion is placed at the start of each coverage period, that is, at the start of one coverage period before the requirement date.
| W0 | W1 | W2 | W3 | W4 | W5 | W6 | W7 | W8 | W9 | W10 |
SOF |
| 50 | 250 | 100 | 50 | 105 | 105 | 150 | 250 | 125 | 125 |
WOF |
|
|
| 100 |
|
|
|
| 100 |
|
|
WOS | 455 | 655 |
| ||||||||
Projected stock | 405 | 155 | 155 | 105 | 0 | 550 | 400 | 250 | 125 | 0 |
Level of localization/Global variable
This parameter is defined at the level Site. It belongs to Chapter STO (Inventory) and the Group SCH (Planning), The following parameters are also associated with this chapter and group :
- AVGDAY (Average days per month)
- AVGWRKDAY (Average work days per month)
- DEFPTO (Assignment rule MTO)
- FIRWRKDAY (First work day of week)
- GPLNFLT (Planner/buyer filter)
- GPLNHOR (Default planning horizon)
- MPSPJTSOF (Process firm SOs in MPS)
- MPSPJTSOP (Process planned SOs in MPS)
- MPSPJTSOS (Process suggested SOs in MPS)
- MPSRECOVST (MPS reduce coverage stock)
- MPSSECCOV (Safety stock coverage)
- MRPPJTSOF (Process firm SOs in MRP)
- MRPPJTSOP (Process planned SOs in MRP)
- MRPPJTSOS (Process suggested SOs in MRP)
- MRPSECCOV (Safety stock coverage)
- PLNTWD (Weekly planning structure)
No global variable is associated with it.
Functions concerned
The following functions are associated with this parameter :
Stock > Reorders > MRP processing
Manufacturing > Planning > MRP processing
Comments
The type of suggestions to be generated (work order, purchase order, intersite transfer or subcontract order) are defined in the MRP Requirements parameters (Setup > Stock > Requirements parameters (GESPCB)).
The facility to move an existing order forward is also defined in the MRP Requirements parameters (field Forward lead time) for each type of suggestion.