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U.S. Bank Europe DAC. Registered in Ireland – Number 418442..  Registered Office: Block F1, Cherrywood Business Park, Dublin 18, D18 W2X7, Ireland.
U.S. Bank Europe DAC, trading as Elavon Merchant Services, is regulated by the Central Bank of Ireland.
 
U.S. Bank Europe DAC. Registered in Ireland with Companies Registration Office. The liability of the member is limited. United Kingdom branch registered in England and Wales under the number BR022122.
U.S. Bank Europe DAC, trading as Elavon Merchant Services, is a credit institution authorised and regulated by the Central Bank of Ireland.  Authorised by the Prudential Regulation Authority.  Subject to regulation by the Financial Conduct Authority and limited regulation by the Prudential Regulation Authority.  Details about the extent of our regulation by the Prudential Regulation Authority are available from us on request.

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## HTTPS status codes

The possible https codes in the responses are listed below:

| Code | Description |
| ------------| ------------- |
| 401 | Invalid credentials |
| 400 | Invalid request |
| 400 | Bad request |
| 200 | Successful operation |

## Webhook status codes

| Scenario | Status | Merchant Message |
|----------------------|-------------|--------------|
| Consumer started Avvance financing application | application_started| Pending Consumer Action|
| Avvance financing application link expired | application_link_expired | Expired Link |
| Avvance financing approved and offers presented | application_approved |  Pending Consumer Action |
| Avvance financing requires additional action from Consumer | application_pending_require_customer_action | Pending Consumer Action |
| Avvance financing is not available for consumer | application_denied_request_alternate_payment | Request Alternative Payment |
| Avvance financing encountered system error | system_error_request_alternate_payment | Request Alternative Payment |
| Avvance financing transaction is successful, and payment is authorized | invoice_payment_transaction_authorized | Invoice Paid |
| Avvance merchant settlement is processed | Invoice_payment_transaction_settled | Payment Settled |

## Webhook response codes
| HTTPS response status codes| Description| Notes |
| ------------| -------------| ------------- |
| 200| Successfully processed |  |
|4XX| No retry. This is end of webhook flow in failed state. | Avvance platform will retry to send webhook to partner if there is a server error from the partner callback URL |
|5XX|Retry. Avvance will try up to 2 times until server responds successfully. | In event of continued failure, Avvance will attempt to post the response one more time the next day at 1 am CST. No Further attempts will be made. |

## Error codes

This section outlines various error messages returned by Avvance platform.

|Error code|Error message|Error reason|
|:----|:----|:----|
|400.44010.41000|MerchantId is mandatory|MerchantId is mandatory|
|400.44010.41000|The request cannot be fulfilled due to bad syntax or an invalid parameter.|Missing request parameters|
|400.44010.41110|MerchantId is mandatory|MerchantId is mandatory|
|400.44010.41111|InvoiceId is mandatory|Missing data|
|400.44010.41112|InvoiceAmount is mandatory|Invoice amount is invalid|
|400.44010.41114|PartnerSessionId is mandatory|Partner session id is mandatory| 
|400.44010.41199|A shopping cart for this given partnerSessionId already exists|A shopping cart for this given partner session id already exists|
|400.44010.41154|Shipping date invalid|Missing data|
|400.44010.42020|Channel-ID header is mandatory|Missing header parameters|
|400.44010.42030|Application-ID header is mandatory|Application-ID header is mandatory|
|400.44010.42040|Correlation-ID header is mandatory|Correlation-ID header is mandatory| 
|400.44010.42050|Session-ID header is mandatory|Session-ID header is mandatory|
|400.44010.42060|Partner-ID header is mandatory|Partner-ID header is mandatory|
|400.44010.42070|Authorization header is mandatory|API level|
| | | |
|400.45970.41110|ApplicationGUID is mandatory|Validation error |
|400.45970.41120|UniqueAccountId is null or empty|Validation error |
|400.45970.40004|Request cannot be processed due to Invalid Request|Amount is invalid|
|400.45970.41030|Partner Session id is mandatory.|Missing partner session id|
|400.45970.42010|Correlation-ID header is mandatory.|Missing header parameters|
|400.45970.42040|Application-ID header is mandatory|Missing application ID|
|400.44010.42050|Session-ID header is mandatory|Session-ID header is mandatory|
|400.45970.42110|Channel-ID header is mandatory|Missing channel ID|
|400.45970.42120|Session-ID header is mandatory|Missing partner session ID|
|400.45970.61102|Unable to find any eligible transactions for void|Appropriate loan transactions are not present|
|400.45970.61103|Unable to find any eligible transactions for void.|Loan transactions are not present|
|400.45970.61104|Cannot process refund as the transaction is not settled.|Previous transaction is not settled. |
|400.45970.61105|Cannot process refund as the refund amount requested is exceeding actual invoice amount|Amount exceeds actual invoice amount|
|400.45970.61106|Cannot process refund as the Invoice payment is not available.|Invoice not present|
|400.45970.61106|Cannot process refund as the Invoice payment is not available.|Invoice is not present|
|400.45970.61107|Invalid partner session id|Invalid partnersessionid|
|400.45970.61108|Cannot process void as the Invoice payment is not available|Void without sale|
|401-01|api key is invalid|Authorization Apigee Level|
|401.1079.3645|The request has not been applied because it lacks valid Authorization/client application identifier| Authentication errors|
|401.44010.9000|Access denied for API:usb-poslp-shopping-cart-create, Role: customer and Channel: null| Authentication errors|
|500.44010.50010|Subsystem Data unavailable| Back end service calls failed - connectivity/timeout etc|
|500.44010.50020|Subsystem unavailable| Back end service calls failed - connectivity/timeout etc|
|500.44010.50020|Read Timeout Error|Back end service calls failed - connectivity/timeout etc|
|500.44010.51110|Unable to create shopping cart|Generic Exception during request Processing|
|500.44010.51120|Invalid merchant|Invalid information|
|500.44010.51131|Partner Expired|Invalid information|
|500.45970.61010|Approved Transaction for a Partial Amount|Transaction error|
|500.45970.61020|Approved Transaction (without Cashback)|Transaction error|
|500.45970.61030|Decline (Pick Up Card)|Transaction error|
|500.45970.61040|Decline (Hard or Soft)|Transaction error|
|500.45970.61050|Decline (Record Not Found)|Transaction error|
|500.45970.61060|Decline (Referral Message)|Transaction error|
|500.45970.61070|Decline (For CVV2 Only)|Transaction error|
|500.45970.61080|Decline (Loyalty/Gift Error)|Transaction error|
|500.45970.61101|Decline (Additional Gift Card Declined)|Transaction error|
|500.45970.61100|Unknown error from Axis|Transaction error| 
|APIGEE Error Codes| | |
|401| Invalid Credentials|Invalid Consumer key and/or secret.|


Status codes and error codes

Alliance Offers

Data as a Service

Invitation to Apply

Accounts

Bank Holidays

Card Activation

Card Controls

Challenge-Widget

Commercial Credit Cards

Commercial Statements

Credit Card Account Details

Credit Card Accounts Overview

Credit Card Alerts

Credit Card Application Status

Credit Card APRs

Credit Card Balance Transfers

Credit Card Disputes

Credit Card Payments

Credit Card Qualified Offers

Credit Card Statements

Credit Card Transactions

Data Sharing for Marketing Purposes

Digital Wallets

Make a Payment - Coming Soon

Rewards Accelerator

Rewards Automatic Redemption

Rewards: Balance Summary

Rewards: Dashboard

Rewards Redemption Accounts

Rewards Redemptions

Rewards Transactions: Earned and Redeemed

Travel Notifications

User Profile

3DSecure2

Avvance

CheckoutJs

Commerce SDK

Converge

Disputes Management

Dynamic Currency Conversion

eBoarding

Elavon Cloud Payments Interface

Elavon Payment Gateway

Fusebox

Hosted Payment Page

In Person Payments on Opayo

Leads

Lightbox payment modal

Online Payments on Opayo

Opayo

Opayo Direct

Opayo Forms

Opayo Reporting API

Opayo Server

Opayo Shared API

Payment Method Gateway

Payments Core 365

Simplify

viaconex

XML API

Card as a Service API

Core Banking API

Money Movement API

Reference API

Access Online Transactions

Account Transfers

Account Validation

ACH Originations

Bank Information

Card as a Service

Check Payables

Corporate Account Information

Corporate Account Information 3LO

Corporate Credit Cards

Corporate Onboarding

Corporate Statements

Custody

Data Toolbox

Data Toolbox - Accounts

Data Toolbox - Documents

Data Toolbox - Transactions

Debit Card Phone Number Lookup

Disbursements via Zelle®

U.S. Bank Flexible Capital Platform

Freight Payment Customer Profiles

Freight Payment Transactions

Incoming Webhooks

Instant Payments

Investment Accounting

PaySmart

Payee Choice

Payee Token+

Personal Loans

Positive Pay

Push to Card

Receivables

RTP® - Real-Time Payments

Tokenized Payments

Treasury Builder

U.S. Bank FBO Account

Virtual Account Reporting

Virtual Card Payments

Voyager Accounts

Voyager Cards

Voyager Drivers

Voyager Transactions

Voyager Vehicles

Wire Transfers

Avvance Overview

Getting started

API reference

Test your integration

Release notes