Hello SAP Gurus,
I need to know how is working the process of Validation and Substitution on the S/4 Hana system.
In our actual SAP ERP we use the standard transaction
GGB0 and OB28---------> Validation.
GGB1 and OBBH--------->Substitution.
and then for a lot of them we have implemented user exit where we have written our z-code.
How look like in S/4 Hana this process? Will be always possible to user the transaction above and will always possible to implement a kind of user exit behind?
I tried to search a bit in Internet, I found some information under this link:
But here is mentioning the App on Fiori, my question is more on S/4 HANA GUI. Do you know any official documentation or any information about that?
Thank you in advance.