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We are integrating an external application with the Banno platform and are currently relying on the subId (subject identifier) returned from the Banno API as a unique identifier for each user.

I have a few questions:

  1. Is there any way for our Banno client (FI) to obtain a list of all customer subIds in their environment?If not, what is the recommended approach for correlating users between our external system and Banno?

  2. Can we use the external_tracking_records endpoint to associate our own external GUID with Banno users?

We are trying to ensure a consistent and secure way to link user accounts between our system and Banno.

Any guidance or best practices would be greatly appreciated!

askedMay 27 at 20:15
Alisia Rush's user avatar

1 Answer1

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  1. Banno does not provide a way to retrieve a bulk list of all usersubIds directly. Instead, you should use therestricted claim for the unique customer identifier (such as CIF for banks or Member Number for credit unions) provided by Banno when a user authenticates. The financial institution you are working with should be able to supply a complete list of CIF or Member Numbers from their core system, and you will then map these identifiers to Banno'ssubId.

    You will have to maintain this mapping yourself.

  2. external_tracking_records isnot meant for this. You should rely solely on the mapping described above using the restricted claim for customer identification.

answeredMay 27 at 21:06
Sam's user avatar
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2 Comments

We support both consumer and business credit card users. CIF was suggested for user mapping, but in business cases, multiple users share a CIF, so it’s not unique. NetTeller ID identifies individuals, while Cash Management ID applies to businesses. Given CIF’s limitations, what’s the best way to uniquely identify users in Banno for secure mapping? Can a custom claim combining NetTeller ID + Cash Management ID be created to form a unique key? Are there other claims or best practices for ensuring consistent, per-user identification across consumer and business users?
I am having to do something similar. You stated : The financial institution you are working with should be able to supply a complete list of CIF or Member Numbers from their core system, and you will then map these identifiers to Banno's subId. How do we know the subId if they cannot export this in bulk? Is this a chicken/egg problem? Seems we can only go off of the CIF and map it to our own internal id. If we don't have the sub to begin with how can we map it? Can the CIF/Member Number contain multiple accounts? Does Banno allow that?

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