I'm using GGB0 to create validation about asset master data.
The step of prerequisite is setting to cost center is not blank.
The step of check I choose exits of "Company code validation Cost center - Asset master record (SAM01)".
In order to add cost center blocked checking, I know that i need to copy standard program SAPFGBEB to ZSAPFGBEB and edit the program.
The problem is where should i assign ZSAPFGBEB in the system?
BTW, I'm using AS01 to create new asset.