there are 3 types of routines
1) start routine
2) End routine
3) expert routine

Also
Routine for Updating Key fig & Routine for Updating Char 
available at Transformation Rule Details

there are 4 types of routines 
1、infopackage routine
2、start routine
3、transfer routine
4、end routine

Actually routine is the ABAP CODE where ever we can write 
in BI.  We can write the ABAP CODE at the following cases.

1. InfoPackage routine, where even we can get the file 
information also.
2. Start Routine, This will trigger before 
Transformations.  Generally used for Filtering records.
3. Endroutine, this will trigger before Transformations.  
Generally used for updating data based on existing data.
4. Expert Routine, this will trigger without any 
transformation Rule.  Whenever we try to write a expert 
routine, all existing rules are deleted.  This is used 
generally for customizing rules.
5. Ty Routine, this will trigger inside the Rule based on 
the char. or KF.  If rule for Char, then Char 
Transformation Routine will trigger.  If rule for KF, then 
KF Transformation Routine will trigger.

Always let me know for suggestions.......

Endroutine, this will trigger ~~~~ AFTER ~~~ 
Transformations.

Hi,

     There are different types of routines are there

1.Transfer routine.
2.Update routine.
3.start routine.
3.Expert routine.(This is the new feature in BI).

Regards,
Giri.

There are three types of routines-
1. Start routine
2. End routine and 
3. Expert routine