This section explains the potential issues that merchants may experience during external 3DS1 and 3DS2 authentication issues resulting in elevated 3DS errors.

Here are some scenarios that may be visible to you due to this issue:

1. Transactions skipping 3DS and proceeding to authorisation without authentication. 
2. Increase in rawAcquirerResponse: "Authentication Required" for PSD2 in-scope transactions. 
3. Transactions resulting with status: "ERROR" with  rawAcquirerResponse:"RReq not received from DS"
4. Transactions resulting with status: "CANCELED" if Risk rule: Liability Shift Check is configured on your merchantAccount. You can consider disabling this Risk check to avoid transaction cancellations. 

Our teams are working with the scheme's to resolve this issue at the earliest and taking relevant action.