Retreive Error Message Desc from BSFN from NER

I'm writing a NER and it's going to end up calling some business functions. Typically when I do this, I execute the function and then check for an error like so

SomeBusinessFunction
//
If SV Error_Status is equal to CO ERROR
// STAHP! but what was the error?
Else
// Ok to proceed
End If

Is there a method to retrieve the error and description of the error(s)?