Answer / sanjay

Routine is a place where ABAP coding written for BW to fetch, manipulate data .it is use to write code for particular field(Field routine) it is used to write code for source(Start routine) and used to write code for target(End routine). Also Expert routine which is use to map all existing fields populated from source through code only.

Answer / dinesh5

Complex rules of transformation are defined in Routines in the form of ABAP codes.
The rules can be FIELD level (Field routine) or Source level (start routine) , target level(end routine) or Expert routine.

Answer / monika sharma

Routines are used to defines complex transformation rules.
In most of the cases data won't be coming directly in desired format. Before sending data into the target we need to go for writing of routines at the transformation level.
There are 4 types of Routines available:-
1)Field Routines
2)Start Routines
3)End Routines
4)Expert Routines
According to need we can choose routines for transformation.

Answer / srisha

Coding used for manipulation or any kind of calculation/restriction done for the data which is coming from source and updated before the data is loaded to the target.

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