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PayPal Checkout INVALID_CURRENCY error encountered during transaction.

The currency code provided is invalid.

Understanding PayPal Checkout

PayPal Checkout is a powerful tool designed to facilitate online transactions by providing a seamless payment gateway for businesses and customers. It supports multiple currencies and offers a secure platform for processing payments, making it a popular choice among developers and businesses worldwide.

Identifying the INVALID_CURRENCY Symptom

When integrating PayPal Checkout into your application, you might encounter the INVALID_CURRENCY error. This error typically surfaces when a transaction is attempted with an unsupported or incorrectly formatted currency code.

Common Observations

  • Transaction fails to process.
  • Error message: "INVALID_CURRENCY" displayed in logs or user interface.

Exploring the INVALID_CURRENCY Issue

The INVALID_CURRENCY error indicates that the currency code used in the transaction request is not recognized by PayPal. This could be due to a typo, an unsupported currency, or an incorrect format.

Understanding Currency Codes

Currency codes are standardized by the ISO 4217 standard, which assigns a three-letter code to each currency. For example, USD for United States Dollar, EUR for Euro, and JPY for Japanese Yen. PayPal supports a wide range of these codes, but it's crucial to ensure that the code used is valid and supported.

Steps to Resolve the INVALID_CURRENCY Error

To fix the INVALID_CURRENCY error, follow these steps:

Step 1: Verify the Currency Code

Ensure that the currency code used in your transaction request matches one of the valid codes listed in the PayPal Currency Codes documentation. Double-check for any typos or incorrect formats.

Step 2: Update Your Code

If the currency code is incorrect, update your code to use the correct currency code. For example, if you mistakenly used "US" instead of "USD", update it as follows:

{
"currency_code": "USD"
}

Step 3: Test the Transaction

After updating the currency code, test the transaction again to ensure that the error is resolved. Use PayPal's Sandbox Environment for testing to avoid affecting live transactions.

Conclusion

By following these steps, you should be able to resolve the INVALID_CURRENCY error in your PayPal Checkout integration. Always refer to the PayPal API Documentation for the latest updates and supported currency codes to prevent similar issues in the future.

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