# 101
source: https://developer.mastercard.com/open-finance-us/documentation/errors/error-codes/101/index.md

This error occurs when an existing connection to a financial institution is down and the end user may experience a failed attempt to add their bank accounts.​

|             Title             |                                                                                                                                                                                                                                                                                                                     Details                                                                                                                                                                                                                                                                                                                     |
|-------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| **Error Code**                | 101                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| **Remediation Category**      | Retry Later                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| **HTTP Status**               | 500                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| **Error Type**                | Institution Error                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| **Data Connect Alert**        | We're unable to establish a connection to your financial institution. Try again later or select another institution. (101)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| **Error Message**             | There is currently a problem with the connection to this financial institution and it's being worked on. Please try again later.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| **Common Causes**             | This error usually happens when the bank updates its website or server. These changes can disrupt the connection between your app and the bank, requiring changes/updates to restore the original connection.                                                                                                                                                                                                                                                                                                                                                                                                                                   |
| **Troubleshooting Steps**     | Submit a [support ticket](https://developer.mastercard.com/open-finance-us/documentation/support/index.md#create-a-support-case-in-scm) for troubleshooting. ​Simultaneously, Data Connect display alerts will automatically prompt the end user when they are in session to take suggested remediation action associated with this error. ​ Best Practice: Developers may prompt end users to log into their application to ensure the end users can take recommended action to resolve the issue. The end user will be prompted to login to their account directly at the institution's website and follow the instructions there to proceed. |
| **Data Connect Fix Eligible** | No.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| **Retriable by End User**     | Yes, the end user will need to make 3-5 authentication attempts which will assist in the troubleshooting process. ​                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| **Access to Latest Data**     | You will be unable to access the latest data for this user's account until the end user resolves the issue.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |

[Full Error List](https://developer.mastercard.com/open-finance-us/documentation/errors/error-list/index.md) \| [Institution Errors](https://developer.mastercard.com/open-finance-us/documentation/errors/institution-errors/index.md)