1. Enhance Sales order header table VBAK (Use APPEND Structure)
2. Implement the user exit to fill the value of custom field (such as user exit in program MV45AFZZ)
3. Enhance the field catalog structure KOMB
4. Add Z field into field catalog
5. Create Condition table between 600 and 999
6. Define new Access Sequence
Before we can use the field assignment, we need to enhance another structure KOMKBV1(Output determination communication area header appl.V1)
7. Create new output Type (better to Copy)
8. Add Condition type to Determination procedure
9. Implement related coding block if needed
10. Finally create Condition record with VV11.
PS: Note on testing
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