What does a 503 error mean? Leroy Esterhuizen August 16, 2021 14:13 Updated Follow This is a timeout error receive by merchants on 3D Secure when attempting to do a 3D Secure lookup. Related articles Adumo Online API Response Codes What is 3D Secure and how does it protect me against fraud? Comments 0 comments Please sign in to leave a comment.
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