Assigning Batches in Production Orders 
Prerequisites
You have created at least one production BOM that includes items managed by batches.
You have created at least one production order that includes items managed by batches.
The Issue Method value for batch number items in the Production Order window is not backflush.
Note
You follow a similar process for a disassembly bill of materials: You select the relevant numbers in the issue for production stage (parent quantity), and then record the relevant batch numbers in the receipt from production stage (the child items’ quantity).
Procedure
Choose
Production 
Receipt from Production 
.Select the relevant production order.
The Batches - Setup window opens automatically for the parent item in the Receipt from Production stage.
Create batch numbers for the parent item.
To define batches for child items, choose
Production Issue for Production .Select a production order.
The Select Items to Copy window appears. This window includes all the child items that are to be batch managed.
Select one or more rows by pressing CTRL, and SHIFT, and choose the OK button.
In the Quantity field, press CTRL, and TAB or choose the Add button.
The Batch Number Selection window appears.
To save your changes, select the batches and choose the Update button.