What errors can be produced when using PayPal APIs?
For a complete list of API error codes, see the API Error and Warning Codes page on the PayPal Developer Portal.
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Why did I get the error "Class 'PayPal\Rest\ApiContext' not found" when using the PayPal SDK?Issue The PayPal SDK returned a class not found error. Cause The file path in the PHP SDK couldnt be found. Solution Use Composer to update the vendor folder; for example: require(vendor/autoload.php); $api = new \PayPal\Rest\ApiContext( new \PayPal\Auth\OAuthTokenCredential( $client_ID, $client_Secret ) ); $api-setConfig([ mode=sandbox, http.ConnectionTimeOut=30, log.LogEnabled=false, log.FileName=, log.LogLevel=FINE, Why did I get a fatal error when using the Call API button in the PHP SDK Web Console?Issue You got a fatal error message - Call to undefined function: getapiusername(). Cause The path for profile certificates is incorrectly specified. Solution Using the Web Console, change the path to the WebTester folder (this is a folder you have control over) and create a folder called tmp; Why did I get the error "Unable to deserialize object" when using the Java SDK to issue an API call?Issue PayPal returned an unable to deserialize object error, with a message something like this: ERROR: Unable to deserialize object for Could not call com.paypal.soap.api.PaymentTransactionClassCodeType.readResolve() : null ---- Debugging information ---- required-type : com.paypal.soap.api.PaymentTransactionClassCodeType cause-message : Could not call com.paypal.soap.api.PaymentTransactionClass CodeType.readResolve() : null class : com.paypal.soap.api.TransactionSearchRequestType message : What credit cards can I use with PayPal?You can add the followingcredit cardsto your PayPal account: MasterCard Visa American Express Discover Important: Our system does not accept Maestro cards. Thecredit card must be registered under the name of the PayPal account holder. We recommend that you do not use virtual cards to make your payments Why did I get an exception error when retrieving user certificates with PayPal's Microsoft SDKs?Issue While working with the Microsoft SDKs from PayPal, you got the following error: com.paypal.sdk.exceptions.FatalException: Unable to retrieve certificate from user or system keystores for: XXXXX. Cause The SDK throws an exception when the Certificate for your API account hasnt been registered properly on your system through the Why did I get error 4002 when using PDT?Issue While you were using Payment Data Transfer, PayPal returned general error code 4002. Causes This error may have several different causes, such as: An invalid tax token. Cookies. Cache. Internet congestion. The email address isnt confirmed on the PayPal account receiving the payment. With regard to Payment Why did I get the error "Sorry, but you cannot view your existing API Signature while your account is unconfirmed" when accessing my API credentials?Issue An error message reported that your existing API Signature isnt viewable. Cause Your PayPal email address isnt appropriately marked as confirmed in our system. Solution If you try to confirm the email address and youre told that its already confirmed, try adding a second email address and Do I need to use PayPal SDKs to call PayPal APIs?No, you dont need to use PayPal SDKs to call PayPal APIs. However, the PayPal SDKs ease the task of calling PayPal Web Service APIs. They contain libraries that shield the user from the intricacies of the SOAP protocol, and offer a number of other useful features. You Why did I get API error code 10002 with PayPal's Classic APIs?Issue Youre using one of PayPals Classic APIs, and PayPal returned error code 10002. Cause PayPal has an issue with the API credentials that a shopping cart is trying to use. Solution Access the API credentials from your PayPal account and manually repaste them into the setup section What is the “Correlation ID” field in the API used for?This field contains an alphanumeric stringthat allows PayPal to track every API call attempt. Every PayPal APIresponse includes a Correlation ID field. If you contact PayPal with any questions regarding a specific API call, provide this value either in your support request or by attaching the log file Why did I get API error code 10602?Issue PayPal returned API error code 10602 - Authorization completed. Cause The authorization has already been completed. The following API calls can produce this error: DoAuthorization, DoCapture, DoReauthorization, and DoVoid. Solution Use the GetTransactionDetails API call to check the status of the transaction. If your authorization is pending, What can I do if I don't have root access and want to use the PayPal PHP SDK on my host?If you want to usethe PayPal PHP SDK on your host but dont have root access, you can use one of two alternatives for installing Pear (if your host cant do this for you). See the pear.php.net site for information on installing a local PEAR copy on a Why did I get API error code 10620?Issue PayPal returned API error code 10620 - Order has already been voided, expired, or completed. Cause The order has already been voided, expired, or completed. The DoAuthorization, DoCapture, and DoVoid API calls can produce this error. Solution Dont retry the same API call against the same transaction Why did I get the error “Incorrect API credentials” when I tried to make an API call?Issue PayPal notified you that your REST API credentials are incorrect. Cause This error is related to the REST API credentials you use to make API calls. Solution If you previously had your application set up for testing in the Sandbox environment, you may need to switch your What format does the API timestamp use?Each API response contains a timestamp with the date and time in Universal Time Coordinated/Greenwich Mean Time (UTC/GMT), sometimes referred to as Zulu time. Heres a breakdown of the components of an example timestamp (dateTime_in_UTC/GMT = 2015-08-09T21:51:26Z): 2015 -Year 08 - Month 09 - Day T - Time Why did I get website error 3005?Issue PayPal presented website error 3005. Cause This error relates to a database entry on the PayPal website. Solution If you continue to receive this error, see ContactCustomer Serviceand have ready the following information: What led to this error? When (time and date) did this error occur? What How do I use PayPal's Authorization and Capture APIs?Upon completion of customer checkout, you can authorize a payment by setting the value of: DoExpressCheckoutPayment to Authorization or Order. DoDirectPayment to Authorization. The response from these requests returns an Authorization ID. At this point, you can settle (capture funds) with the DoCapture API request. DoCapture requires the Why did I get API error code 10558?Issue PayPal returned API error code 10558 - Unsupported currency for card type: The card you selected doesnt support this currency. Try a different card or currency. Cause The card being used is issued from a country or bank that doesnt support the currency that was requested. For Why did I get the error "Country not specified" when sending an API request?Issue PayPal returned a Country not specified error. Cause Your API request didnt specify a country code, or passed it incorrectly. Solution Check that you specified the country code in your API request and passed it as the value of the correct variable. For some languages, notably .NET,
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