# task-049

Whenever a transaction in Schist is deleted or updated, if the transaction
belongs to a bucket, `bucket`, then Schist must run the procedure,
`calculate_bucket_balance(bucket)`, as described in req-030, under the pretence
that `is_bucket_balance_up_to_date(bucket)` as described in req-035 returns
FALSE.

Source: req-073

Epic: epic-008