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Lerian SPB is Lerian’s own messaging connector to the STR (Sistema de Transferência de Reservas). The STR is the real-time gross-settlement core of the Brazilian payment system. Lerian SPB reaches the STR over the RSFN. The RSFN is the private national network that carries payment-system messages between participants and the Central Bank of Brazil (BACEN). Lerian SPB gives a participant institution a direct path to BACEN. The institution sends and settles interbank and large-value wire transfers, the TED family. It also runs reserve-account operations against BACEN’s settlement system. No connectivity partner sits between the institution and BACEN.

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Who it serves

Lerian SPB serves financial institutions that hold their own reserve and settlement account at BACEN. These institutions send TED-family transfers through the STR. They move liquidity between their reserve account and their liquidity account (Conta PI). They also query their reserve position directly through the STR.

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An operation-centric API

You do not hand-pick a wire code. You declare the typed roles of the parties to an operation. You name who debits, who credits, and whether each side is an institution or a client. The platform then derives the correct STR message code for you.

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Settlement is asynchronous

The STR is a real-time gross-settlement system. Every operation settles individually against reserve balances. When you submit a transfer, the platform returns the status ACCEPTED. This status means the platform accepted your command for dispatch. It does not mean BACEN settled the transfer. BACEN confirms asynchronously through a settlement reply, called the R-leg. The reply moves the operation to CONFIRMED or REJECTED. It carries BACEN’s settlement fields, for example numCtrlSTR and sitLancSTR, projected verbatim.

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Money-neutrality

Lerian SPB is money-neutral. It forwards the amounts you declare exactly as declared and computes no balance or position of its own. The rail carries the message and settlement state. Your ledger consumer records the money movement.

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Glossary

For how Lerian SPB sits alongside the other native rails and the partner interfaces, see Native messaging and partner interfaces.