Owning up to the yanks has become very fashionable after BNP Paribas was fined $8 billion (with a b) for using dollars to pay transactions linked to Somalia while the US had sanctions against Somalia.
The fine will probably now be in millions not billions. 
 Another benefit of going to the yanks first is that it heads off the EU who now have an automatic fine of 10% of global sales in unfair competition cases -- a bribery is unfair.   So far both Microsoft and Google have been hit and the numbers were in billions.
Meanwhile, back in Africa....
Another aspect of this is, is that SAP probably did not need to bribe anyone.  Its very hard to use software is so good at what it does (basically taking information from a sales persons form, ordering parts, telling factories to transform parts into product, sometimes then running the robotic machines, producing delivery bills for the finished goods , invoices to the client, tax to the government and so on) that it sells its-self.