Known Issues

There is a known issue that the Cybersource REST API SDK for .NET Standard can cause reduced performance or connection errors during periods of high transaction volume.

Merchants using the Cybersource REST API SDK for .NET Standard.

The SDK is creating new HTTPClient instances for every new transaction request. This can cause:

Increased DNS resolution overhead.
Lack of connection pooling.
Potential SocketException errors under heavy load, which occur during events such as the ballots sale.

There is no workaround for this issue.

There is a known issue that certain network tokens containing device PANs (DPANs) are invalid and unusable for testing in the CAS environment. The planned fix will result in the removal of the invalid network tokens to ensure accurate testing.

GPAP merchants using the CAS environment for testing network tokens with DPANs.

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