Error: BBTree add object error: 457 This key is already associated with an element of this collection. error adding key: (x#)

Occurs when opening pledge or recurring gift payments for one constituent.  The original pledge/recurring gift may open or it may receive the error.  The error occurs when trying to open, edit or delete the payment gift record.
We resolved this issue in version 7.91.5056, patch 8. Download and install the latest patch, which contains all fixes from previous patches. If you are running an older version, download and install the latest version and then the patch.

Environment

 7.83.5026
 7.91.5056, patch 8

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