▚ BIAN PLATFORM
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Operations and Execution

Letter Of Credit

sd-letter-of-credit · bian-operations

A BIAN service domain in Operations and Execution. It applies the Fulfill functional pattern to the Letter Of Credit, with the Letter Of Credit Fulfillment Arrangement as its control record — one independent Spring Boot microservice on the platform's Cilium eBPF mesh.

View repository ↗The 162-domain platform ↗

Business DomainLoans and Deposits
Functional PatternFulfill
Asset TypeLetter Of Credit
Control RecordLetter Of Credit Fulfillment Arrangement

USEWhat it is used for

Representative use cases for the Letter Of Credit service domain within a BIAN-aligned core-banking landscape.

APIBIAN semantic API

The control record (Letter Of Credit Fulfillment Arrangement) is exposed through uniform BIAN action terms. Java 21 · Spring Boot 3, OpenAPI at /swagger-ui.html, health at /actuator/health.

MethodPathBIAN action
GET/v1/service-domainService metadata
POST/v1/letter-of-credit-fulfillment-arrangement/initiateInitiate
GET/v1/letter-of-credit-fulfillment-arrangement/{crId}/retrieveRetrieve
PUT/v1/letter-of-credit-fulfillment-arrangement/{crId}/updateUpdate
PUT/v1/letter-of-credit-fulfillment-arrangement/{crId}/controlControl (suspend / resume / terminate)

INTBackend integrations

The systems and standards a real deployment of Letter Of Credit would transact with.

RUNRun it yourself

Each service domain is its own standalone Spring Boot repository — clone and run in seconds, or deploy onto Kubernetes with the bundled Helm chart behind the Cilium mesh.

# run this service domain standalone
git clone https://github.com/Sreenivas-Sadhu-Prabhakara/sd-letter-of-credit
mvn -f sd-letter-of-credit spring-boot:run
curl localhost:8080/v1/service-domain

# or deploy onto Kubernetes (Cilium eBPF mesh)
helm upgrade --install sd-letter-of-credit ./helm -n bian-operations

FAQQuestions

What is the BIAN “Fulfill” functional pattern?
A Fulfill service domain runs the full lifecycle of a product or service arrangement — origination, servicing and closure. Letter Of Credit applies it to the Letter Of Credit.
What is a BIAN service domain?
BIAN (the Banking Industry Architecture Network) decomposes a bank into independent service domains, each owning exactly one business capability. Letter Of Credit is the service domain for Loans and Deposits; it manages the Letter Of Credit Fulfillment Arrangement and exposes it through standard BIAN action terms.
What business area does Letter Of Credit belong to?
Letter Of Credit sits in the Operations and Execution business area — the operational core that executes payments, positions, settlements and transactions. It runs in the bian-operations namespace as one independent Spring Boot microservice.
Is Letter Of Credit production-ready?
It is an educational reference implementation: a real BIAN REST API over an in-memory store, ready to be filled with domain logic. It is not a live bank and is not affiliated with BIAN.

SEEIn the landscape

Letter Of Credit is one of 162 BIAN service domains on the platform. Explore the rest:

▚ Platform overview The Master Catalog (162 domains) This repository ↗