7b7c4f6f_various_Reason_Codes_indicate___Description
[Reason Code] 150 [Reply Flag (SCMP)] ESYSTEM [Possible Action] See the documentation for your CyberSource client (SDK) for information about how to handle retries in the case of system errors. [Description] 
Error - General system failure.
CyberSource Support Center - What do the various Reason Codes indicate?
Description