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Why did I get API error code 10508?

We expect to receive a six-character string MMYYYY for a credit card expiration date (EXPDATE). For example, May 2027 should be "052027". December 2025 should be "122027".

Don't include slashes ("/") in the expiration string.

See the Developer Portal for a complete list of NVP/SOAP API error codes.

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