# 900
source: https://developer.mastercard.com/open-finance-us/documentation/errors/error-codes/900/index.md

This error occurs when a new connection to a financial institution is being created. Multiple authentication attempts from the end user will help resolve this issue.

|             Title             |                                                                                                                                                                                                                                                           Details                                                                                                                                                                                                                                                           |
|-------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| **Error Code**                | 900                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| **Remediation Category**      | Retry Later                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| **HTTP Status**               | 500                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| **Error Type**                | Institution Error                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| **Data Connect Alert**        | We ran into a connection issue, try again later or select another institution. (900)                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| **Error Message**             | This attempt has been logged. The connection to this financial institution is currently in the second phase of the creation process. Please attempt to log-in (up to 5 attempts in a row if possible) in order to store all the additional authentication information needed, then try again in 2-3 days.                                                                                                                                                                                                                   |
| **Common Causes**             | This error can occur when a new connection to a financial institution is being created.​                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| **Troubleshooting Steps**     | Data Connect display alerts automatically prompt the end user when they are in session to take suggested remediation action associated with this error. For example, Connect alerts can prompt the end user to attempt for account selection and account authentication to establish a successful connection faster. Best Practice: If the issue persists, Developers may prompt the end users to log into their application to ensure the end users can take recommended action timely so that data access can be resumed. |
| **Data Connect Fix Eligible** | No.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| **Retriable by End User**     | Yes, the end user may need to make several multi-factor authentication attempts to login to their bank. If unable to connect, the end users can try again in a week to see if new connection with this financial institution is now added.​                                                                                                                                                                                                                                                                                 |
| **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)