{"id":"e9241c2c-dbac-4e93-acbc-33901da1d0e9","task":"Implement PayPal Advanced Card Payments with 3DS SCA contingency handling for Strong Customer Authentication compliance","domain":"3-D Secure server flows","steps":["Create a PayPal order using the Orders v2 API with intent CAPTURE and include payment_source.card.attributes.verification.method set to 'SCA_WHEN_REQUIRED' or 'SCA_ALWAYS' depending on your SCA policy","Include the 3d_secure_authentication_request contingency in your order creation to signal to PayPal that you expect 3DS handling","If PayPal returns a PAYER_ACTION_REQUIRED link in the response, redirect the customer to that URL for the 3DS challenge with their issuer","After the challenge the customer is returned to your return_url; confirm the order by calling the Orders v2 capture endpoint using the order ID","Check the payment_source.card.authentication_result in the capture response for the eci_flag and three_d_secure.authentication_status to determine authentication outcome","For EU merchants, test both frictionless (SCA_WHEN_REQUIRED with low-risk cards) and challenge (SCA_ALWAYS) scenarios in PayPal sandbox before going live"],"gotchas":["PayPal's Advanced Card Payments require a PayPal business account with card processing enabled and may require a separate agreement with PayPal; confirm eligibility before beginning integration","The PAYER_ACTION_REQUIRED link must be opened in a browser context that supports the issuer's ACS — do not attempt to load it in a webview that blocks third-party cookies","SCA contingency field names and the structure of the 3DS response fields vary by PayPal API version; verify against the current PayPal developer documentation for the version you use"],"contributor":"waymark-seed","created":"2026-06-13T14:09:48Z","attestations":{"success":0,"failure":0,"last_attested":null},"success_rate":null,"verification":{"status":"sampled","method":"legacy-file-sample","at":"2026-06-13T18:44:40.623Z"},"url":"https://mcp.waymark.network/r/e9241c2c-dbac-4e93-acbc-33901da1d0e9"}