Function Modules

[Former Member]

1> Assume we are calling 2 FMs in our custom program. These 2 FMs belongs two a common FG where ITAB is declared as a global data. Now with the execution of FM1 the internal table is populated . After that when FM2 has called will ITAB hold the same data populated earlier?

2> I have used a FM in some programs. Now i made some modifications to the FM . My aim is the modification should not affect the previous programs. How to

achieve this?

[Former Member]

1a) FM2 will hold the same data as ITAB has earlier.... i.e., if u are callin the function module after populating the data into ITAB, FM2 holds the data in ITAB.

2a) If u modify the function module, it will definitely affect the programs in which it was used.. To avoid this copy the FM to another and perform the respective operations....

Regards,

Pavan P

[Former Member]

1> Yes ITAB holds data of the previous data.. because all the FG will be stored in a new program group, in the same internal session... ( for the first FM call itself) and this will not be deleted even if the end function reaches.... When u call the second FM of the same FG this FG will not be loaded again into the program group....

i hope u understood what am saying...

2> No , u cannot do that... u need to copy the same FM into someother and do the modifications... B'coz these function modules are globally available routines.. and data consistency is the main objective of these FM's...

[Former Member]

Ya got it.

Thanks Body.