The manual prevails
- Source. The official manuals of BACEN and of the market infrastructures (Núclea, B3, Selic) define each message, its fields and its cut-off times. A manual does not define the order between messages, so the order shown here is a suggested reading.
- Conflicts. If this site and a manual disagree, the manual prevails.
- Responsibility. Your institution is the participant. It validates each flow against the manuals in force and decides how to apply it to its operation.
- Support. Lerian supports its own products and APIs. Advice on applying the manuals to your operation is a separate service: Lerian offers workshops and consulting by proposal. Contact your Lerian account team.
Journeys
Treasury and liquidity
- Buy and sell federal bonds: How an outright trade in federal government bonds settles in Selic, cash through STR first and custody after.
- Repurchase agreements: How a repo runs its start and return legs in Selic and in B3.
- Buy bonds in a public offering: How a winning bid in a federal bond auction settles in Selic.
- Liquidity and rediscount: How an eligible institution gets and repays liquidity in its PI account, and how a rediscount reaches Selic.
- Issue and place fixed income: How an instrument is registered, issued and placed with investors in B3.
- Buy and sell private securities: How an outright trade in a private security registers and settles in B3.
- Interest, amortization and redemption: How interest, amortization, maturity and redemption reach the holder in Selic and in B3.
- Subscribe and redeem fund quotas: How a subscription or redemption in an open-ended fund registers, gets confirmed and settles in B3.
- Transfer custody and pledge collateral: How securities move between accounts without payment, and how they are linked or blocked as collateral, in Selic and in B3.
- Financial settlement paths: The gross and multilateral paths that move the cash of a B3 operation through STR, and how Selic settles cash.
- Cancel, refund and recover: How to recover a lost response, cancel an operation and receive a refund in B3.
- Position and reconciliation: The B3 queries and notices that let your institution reconcile operations, positions and cash.

