# 928
source: https://developer.mastercard.com/open-finance-us/documentation/errors/error-codes/928/index.md

This error occurs when the connection to a financial institution is not supported.

|             Title             |                                                                                                                                                                                                                            Details                                                                                                                                                                                                                            |
|-------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| **Error Code**                | 928                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| **Remediation Category**      | Retry Later                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
| **HTTP Status**               | 500                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| **Error Type**                | Institution Error                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| **Data Connect Alert**        | We ran into a technical issue, try again later or select another institution. (928)                                                                                                                                                                                                                                                                                                                                                                           |
| **Error Message**             | Aggregation Not Supported At FI e.g. FI has blocking temporarily.​                                                                                                                                                                                                                                                                                                                                                                                            |
| **Common Causes**             | There could be multiple reasons for these errors: * Institution does not support aggregation. * A specific end user is not authorized due to security reasons.                                                                                                                                                                                                                                                                                                |
| **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. * If you consider this financial institution to be crucial for your application, email Mastercard support at [OB.Institutions@mastercard.com](mailto:OB.Institutions@mastercard.com). They can provide the status of the institution and let you know of any possibilities for future support. |
| **Data Connect Fix Eligible** | No.                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| **Retriable by End User**     | Yes, the end user may add another account to continue or contact you for more support.                                                                                                                                                                                                                                                                                                                                                                        |
| **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) \| [Account Errors](https://developer.mastercard.com/open-finance-us/documentation/errors/account-errors/index.md) \| [Institution Errors](https://developer.mastercard.com/open-finance-us/documentation/errors/institution-errors/index.md)