American Express Payment Decline Code
American Express Decline Code 183: Invalid Currency Code
Category Invalid Payment DataRetry Guidance Conditional Decline (Editorial Classification)By Payment Defender Editorial TeamUpdated July 17, 2026Last reviewed July 17, 2026
What American Express Decline Code 183 Means
American Express declined the transaction because the currency code submitted was invalid or not supported for the account.
Where the Response May Come From
This response reflects a problem with the currency submitted rather than the cardholder's account balance or status.
Common Reasons for This Response
Common causes include an unsupported currency, a mistyped currency code, or a configuration that does not permit the requested currency.
Should the Merchant Retry the Payment?
A retry may succeed once a valid, supported currency is submitted. Retrying the same currency will not succeed.
Recommended Merchant Action
Confirm the currency code is valid and supported by your processing setup, then resubmit with the correct value.
What to Tell the Customer
Explain the currency is not supported and offer to complete the order in a supported currency or with another method.
How to Reduce Similar Payment Failures
Aligning supported currencies with your processing configuration may prevent these declines at checkout.
Important Limitations
Decline-code meanings vary by processor, gateway, and payment environment, and American Express does not always disclose the specific reason behind a response. The retry classification on this page is Payment Defender editorial guidance, not an official network rule. Merchants should confirm handling with their processor or gateway.
Related Decline Codes
Sources and Review Information
- American Express: American Express Merchant Regulations
- PayPal Braintree: Braintree Processor Response Codes
Last reviewed July 17, 2026
Raw network-response codes are supplemental to the complete processor or gateway response. Meanings and recommended actions can vary by issuer, processor, gateway, card network, payment method, region, and merchant configuration.