AMEX BCP Random Cash Back

[Anonymous]

I logged into my AMEX account rencetly and saw two positive transactions labeled cbfj: 0006 bonus cash back promotion. Does anyone know what this is? 

Does not seem like these transactions added to my reward dollars, Google returned no information, and have never seen this happen before. 

Any ideas?

[Involver]

You had to have enrolled in the bonus cash back promotion that was sent out early August.  Additional 1% back on purchases after $750 spend up until Nov 16.