Why did I get API error code 81100?

This error has two possible causes:

• The required parameter wasn’t passed with your API request: OrderTotal (SOAP) or AMT (NVP).
• An invalid parameter (not supported by the API) was passed with your request, and it precedes the OrderTotal or AMT parameter.

For example, the following snippet of a SOAP request will cause error code 81100:

<DoExpressCheckoutPaymentRequest>

<DoExpressCheckoutPaymentRequestDetails>

<ChannelType>eBayItem</ChannelType>

<PaymentAction>Sale</PaymentAction>

<Token>Actual Token Goes Here</Token>

<PayerID>Actual Payer Id Goes Here</PayerID>

<PaymentDetails>

<OrderTotal currencyID="USD">1.00</OrderTotal>

<OrderDescription>Test Product</OrderDescription>

</PaymentDetails>

</DoExpressCheckoutPaymentRequestDetails>

</DoExpressCheckoutPaymentRequest>

Notice that the ChannelType element (in red above, an invalid element with the DoExpressCheckoutPayment API) precedes OrderTotal, so the PaymentDetails block (highlighted in blue) is ignored.

To resolve this issue, examine your API request and determine if the OrderTotal (SOAP) or AMT (NVP) parameters are being passed. In the preceding example, the solution would be to omit the ChannelType parameter. For a list of valid parameters with each of our APIs, see the NVP and SOAP API Reference Guide. 

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