7b7c4f6f_various_Reason_Codes_indicate___Description
[Reason Code] 201 [Reply Flag (SCMP)] DCALL [Possible Action] Call your processor to possibly receive a verbal authorization. For contact phone numbers, refer to your merchant bank information. [Description] 
Decline - The issuing bank has questions about the request. You do not receive an authorization code programmatically, but you might receive one verbally by calling the processor.
CyberSource Support Center - What do the various Reason Codes indicate?
Description