BADI for BP open (display or change mode) event

Question

Hi,
When a user opens a BP (via BP transaction or open method of BOR object) in CRM, I want to do some custom check. Based on the check, I want to decide whether this user is allowed to open this BP or not. If this check fails, I want to display an error message (No authority to display this BP). Only if the check is successful, that BP should open.
Any idea where can I write this type of code?
I checked a few BADIs (BUPA_LOCK, HRSYNC_P etc.), but didn't find anything useful.
Regards,
Kaushal

Answer 1

Kaushal,
For transaction BP in CRM we need to do the following(this won't work in the PCUI).
1. Create a new class that implements: IF_BUPA_DIALOG_JOEL_EXIT
2. Create a new function group that has a subroutine called bupa_dialog_joel_exit_create which is coded similar to the subroutine in function group BUPA_DIALOG_JOEL, but calls the class you created in step 1.
3.  Implement the method IF_BUPA_DIALOG_JOEL_EXIT~CAN_CHANGE_PARTNER in your new class.
4.  Add Z-entries to the application tables below that will reference the new funciton group created above.
TBZJ4 -> V_TBZJ4
TBZJ4C -> V_TBZJ4C
The class CL_BUPA_DIALOG_JOEL_EXIT is an example of the implemented class.
This enhancement mechanism should allow you to do want you want to do and at the right timing in the BP transaction.
Good luck,
Stephen