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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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If Elavon systems are not responding as expected due to an unexpected issue or planned maintenance, it is important for partner systems to be able to handle the scenario properly. Please follow the steps outlined below to ensure your application is correctly resubmitted.  

## Avoiding duplicate applications
1. Ensure the `uniqueId` is wholly original and never repeated for subsequent applications. It should also be different from any application you have previously submitted for the particular environment being used (QA or Production). The `uniqueId` is limited to 32 characters.

:::::notice{tip}

Using the partner's name followed by a millisecond timestamp is a good way to create a `uniqueId`.

**Example:** AcmeCorp1572566399123
:::::


2. For each boarding request, wait 90 seconds for the AWB response to be returned.  
    - If 90 seconds elapses and there is still no response, send the boarding request again WITHOUT changing the `uniqueId`.  The `uniqueId` MUST remain identical to the original application request.

3. If *ALL THREE* of the following are true:
    - You already submitted the application,
    - No response was returned, and
    - Data in the application needs to be modified (*example:* customer wants to correct a phone number or address),

    then update the data and create a NEW `uniqueId`.

## Recognizing a duplicate application error message
If an application with the same uniqueId is submitted and received more than once, the Elavon system will respond to all additional boarding requests with a duplicate error message like the following, which also provides the original AWB reference number.  No further resubmissions are necessary.

```
{
   "error" : "com.elavon.scarecrow.api.impl.boarding.
   DuplicateBoardingException: Duplicate boarding: TypeCode: type Code: 306
   Description: 'error - Duplicate request -app already exists with the source reference number 'AWB: AWB4603689',
   "boardingId" : "AWB4603689",
   "duplicateRequest" : true
}
```

## Retry logic
Keeping in mind the above instructions for `uniqueId`, please follow the steps below for when to resubmit an application when no AWB or error response is returned when expected.

Use this timetable when attempting to resubmit your application:
- First retry after 90 seconds.
- Then retry every 15 minutes for 4 hours.
- Then retry every 60 minutes for 72 hours.

Following the retry timetable will work well for planned or unplanned outages. Outages can usually be detected by a 404 or 911 error. For any other error, you should contact your support team to resolve the issue.


Boarding timeouts

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

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Digital Wallets

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Hosted Payment Page

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Lightbox payment modal

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Opayo Reporting API

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Opayo Shared API

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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

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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

eBoarding Partner API Overview

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Boarding process workflows

Main boarding elements

Passing data to board

Principal applicant

Additional shareholders

Contact information

Financial information

Card pricing

Bank account information

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Release notes

2024

2023

2022

2021

2020