Scenario
When using a Sandbox or Release Preview Account, a Standard Error Message would appear on the User Interface. The error encountered is as follows: “A Bank Feeds connection to your financial institution is already associated with your production account. Linking a new or removing an existing account on the configuration below overrides the existing setup in your production account.”
Solution
In using the Bank Feeds SuiteApp feature, a Standard Error Message can be observed. This message serves as a Notification that any configuration on the Non-Production Account environment would affect the configuration in the Production account.
This error implies that linking a new or removing an existing account on the Release Preview / Sandbox Account environment would also link or unlink the account in Production because each Account is entitled to just one Bank Feed SuiteApp User ID. But this is only applicable if the Sandbox Account was eventually refreshed and copied from the Production Account where Bank Feeds is installed. In this instance, both environments will have the same User Id because Sandbox is a mirror of the Production account.
On the other hand, if the user installs Bank Feeds in Sandbox and Production Account in a separate instance, they are expected to have a different User Id in which any changes made now with Sandbox Account will not affect the accounts reflected in the Production Account and vice versa.