Can batch characteristics be considered while
running a MRP? I have a finished good that has acid value as its batch
characteristics. Based on this acid value I am trying to pick up a certain batch
of raw material that is also batch managed and has its characteristics as acid
While running MRP qty requirements are transferred
and stock is reserved but the required batch qty (having the acid value
required) of raw material is not picked.
MRP does NOT use batch data.
Because, while entering PIR, there's no field to enter batch number. When
system creates planned order, also there's no field to enter batch number, both
for the header material and planned order components.
There's one exception in PP-PI, where you can use batch specific unit of
measure. That is, you can define batch level alternative unit of measure. For
example, you may have a liquid, and it may have Liters as base unit of measure,
and it may also have the percent based active ingredient, that is Liters of the
Active Ingredient can be an alternative unit of measure.
So, every movement of material in the system will be done using 2 unit of
measures at the same time. e.g. goods receipt of 100 Lt liquid (which is also 80
Liters of Alcohol, because of 80% alcohol potency), for the first batch. also
goods receipt of another 100 Lt liquid (which is 60 Liters of Alcohol this time,
because of 60% alcohol potency) When you look at your stock, you will see 200 LT
liquid, which is equivalent to 140 LT Alcohol ingredient.
What's the use of this active ingredient data during MRP?
When you define the batch unit of measure, you define limits for it. Say, our
liquid in previous example can only be between 50% and 90%, therefore we define
it like that. Every time we receive this material from vendor, we make the
quality inspection and determine the Alcohol percentage. however, while running
MRP, system will create purchase requisitions, but it doesn't know the
percentage of the liquid our vendor will send.
How will it determine the correct quantity?
In this case, we define a percentage for MRP, and MRP will use that
percentage for calculation. e.g. if there's an industry standard that all
vendors of that liquid produce it at 75%, or if we are always working with a
vendor who produces 68%, then we can enter this data (per material) and MRP will
calculate with that percentage.