How system calls more than one implementation of a BADI

HI All,

Befor posting i serached in the old threads but not able to understand below issue.

I have a dout,

When we implement more than one implementation (Reusable = X),how the system handles the badi calls ,because a i have observed that only one exit spot will be created for a badi in standard porgram.

Ex:

We have a BADI BBP_OUTPUT_CHANGE_SF(Change Output Parameters) .

If i create two implementation for this ,so when displaying the smartform of the PO ,which implementation did the system executes.

So how system handles it.

Regards

CB

Edited by: Thomas Zloch on Oct 29, 2010 3:08 PM - please use code tags only for code