# Institution Errors source: https://developer.mastercard.com/open-finance-us/documentation/errors/institution-errors/index.md An institution error is returned when a connection to a financial institution is impacted. These errors can occur during planned maintenance or unknown maintenance windows, or when a new or existing connection is disrupted. They can impact data refreshes or live data requests during the time when a connection is impacted. Mastercard Data Connect alerts allow up to 5 attempts for the end user after which the session will end. Alerts generated by the Data Connect application are intended solely for informational purposes and may change without notice. Data Connect alerts should not be used for programmatic purposes. | Error Codes | Error Theme | Description | |----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------|--------------------------------------------------------------------------------------------------------------------------| | [900](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-ip/900-901-903-904-916/index.md#900) [901](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-ip/900-901-903-904-916/index.md#901) [903](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-ip/900-901-903-904-916/index.md#903) [904](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-ip/900-901-903-904-916/index.md#904) [916](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-ip/900-901-903-904-916/index.md#916) | ​​New Connection In Progress ​ | A new connection to a financial institution is being created. | | [101](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-interrupt/existing-connection-interruptions/index.md#101) \| [102](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-interrupt/existing-connection-interruptions/index.md#102) ​​[104](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-interrupt/existing-connection-interruptions/index.md#104) \| [105](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-interrupt/existing-connection-interruptions/index.md#105) [418](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-interrupt/existing-connection-interruptions/index.md#418-and-419) \| [419](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-interrupt/existing-connection-interruptions/index.md#418-and-419) [575](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-interrupt/existing-connection-interruptions/index.md#575) \| [580](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-interrupt/existing-connection-interruptions/index.md#580) [905](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-interrupt/existing-connection-interruptions/index.md#905) \| [906](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-interrupt/existing-connection-interruptions/index.md#906) [907](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-interrupt/existing-connection-interruptions/index.md#907) \| [908](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-interrupt/existing-connection-interruptions/index.md#908) [910](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-interrupt/existing-connection-interruptions/index.md#910) \| [911](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-interrupt/existing-connection-interruptions/index.md#911) [970](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-interrupt/existing-connection-interruptions/index.md#970) \| [971](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-interrupt/existing-connection-interruptions/index.md#971) [2018](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-interrupt/existing-connection-interruptions/index.md#2018) | Existing Connection Interruptions | Existing connection to a financial institution is down. | | [920](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-not-supported/index.md#920-921-922-923-926-927-and-929) \| ​​[921](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-not-supported/index.md#920-921-922-923-926-927-and-929) [922](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-not-supported/index.md#920-921-922-923-926-927-and-929) \| [923](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-not-supported/index.md#920-921-922-923-926-927-and-929) [924](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-not-supported/index.md#924-925-and-928) \| [925](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-not-supported/index.md#924-925-and-928) [926](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-not-supported/index.md#920-921-922-923-926-927-and-929) \| [928](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-not-supported/index.md#924-925-and-928) [929](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-not-supported/index.md#920-921-922-923-926-927-and-929) \| [950](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-not-supported/index.md#950) [960](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-not-supported/index.md#960) \| [972](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-not-supported/index.md#972) [973](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-not-supported/index.md#973) \| [975](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-not-supported/index.md#975) [976](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-not-supported/index.md#976) [1415](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-not-supported/index.md#1415) [2032](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-not-supported/index.md#2032) [14020](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-not-supported/index.md#14020) [14006](https://developer.mastercard.com/open-finance-us/documentation/errors/request/item-not-found/index.md#14006) | Connection not supported | Error when connection to a financial institution is not supported. | | [945](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-migration-inprogress/index.md#945) ​​[948](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/connection-migration-inprogress/index.md#948) | Connection Migration In Progress | Occurs when an account is migrated from legacy to OAuth connection but requires customer to provide their consent again. | | [20007](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/accounts-not-migrated/index.md#20007) ​​[20009](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/accounts-not-migrated/index.md#20009) | Account Migration Error | Occurs when accounts cannot be migrated from legacy to OAuth connections. | | [111](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) \| [114](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) [115](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) \| [116](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) [118](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) \| [119](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) [120](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) \| [121](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) [122](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) \| [123](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) [124](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) \| [125](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) [126](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) \| [127](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) [128](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) \| [129](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) [130](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) \| [133](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) [136](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) \| [138](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) [145](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) \| [151](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) [155](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) \| [156](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) [159](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) \| [164](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) [166](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) \| [167](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) [168](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#data-mismatch-errors) \| [170](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) [178](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) \| [180](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) [184](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) \| [198](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) [417](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#417) \| [500](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#500) [525](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#525) \| [951](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-connection-errors) [953](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-connection-errors) \| [954](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-connection-errors) [979](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-connection-errors) \| [980](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-connection-errors) [982](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-technical-errors) \| [983](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#unknown-connection-errors) [11000](https://developer.mastercard.com/open-finance-us/documentation/errors/institutionerrors/other-connection-issues/index.md#11000) | Other Connection Issues | List of other connection issues you may encounter. |