Datasource Enahncement - What is the case when i am not req to do USER Exit

Experts,
  Can someone explain me what is/are the cases when i do not require to code in the user exit to populate the enhanced field?
I see for some datasource the enhanced values are populated automatically.
Appreciate your answers.
Thanks
Hari

Hi Hari,
In some cases we  do not need to write any code .
Whenever we need to enhance our datasource we first check in LBWE if the required filed is available in the pool .
If it is available in pool we simply transfer it to extract structure and in this case we do not write wny code.
The second case is when we append our extractiion structure because the required field is not abailabl ein the pool.
In this case we need to write code to populate the field.
Hope it helps
Manish Sharma

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