curl --request PUT \
--url https://lender.sandbox.lerian.net/api/v1/br/loan-applications/{id}/b3-registration \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"instrumentCode": "CCB0000ABCD12",
"ccbNumber": "TRN-000123",
"registrationDate": "2026-10-08"
}
'package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://lender.sandbox.lerian.net/api/v1/br/loan-applications/{id}/b3-registration"
payload := strings.NewReader("{\n \"instrumentCode\": \"CCB0000ABCD12\",\n \"ccbNumber\": \"TRN-000123\",\n \"registrationDate\": \"2026-10-08\"\n}")
req, _ := http.NewRequest("PUT", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}const options = {
method: 'PUT',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
instrumentCode: 'CCB0000ABCD12',
ccbNumber: 'TRN-000123',
registrationDate: '2026-10-08'
})
};
fetch('https://lender.sandbox.lerian.net/api/v1/br/loan-applications/{id}/b3-registration', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));import requests
url = "https://lender.sandbox.lerian.net/api/v1/br/loan-applications/{id}/b3-registration"
payload = {
"instrumentCode": "CCB0000ABCD12",
"ccbNumber": "TRN-000123",
"registrationDate": "2026-10-08"
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.put(url, json=payload, headers=headers)
print(response.text){
"instrumentCode": "<string>",
"loanApplicationId": "<string>",
"recordedAt": "<string>",
"ccbNumber": "<string>",
"registrationDate": "<string>"
}{
"code": "<string>",
"detail": "Property foo is required but is missing.",
"errors": [
{
"location": "<string>",
"message": "<string>",
"value": "<unknown>"
}
],
"instance": "https://example.com/error-log/abc123",
"status": 400,
"title": "Bad Request",
"type": "https://example.com/errors/example",
"upstream": {
"code": "E4001",
"message": "account not found at provider"
}
}{
"code": "<string>",
"detail": "Property foo is required but is missing.",
"errors": [
{
"location": "<string>",
"message": "<string>",
"value": "<unknown>"
}
],
"instance": "https://example.com/error-log/abc123",
"status": 400,
"title": "Bad Request",
"type": "https://example.com/errors/example",
"upstream": {
"code": "E4001",
"message": "account not found at provider"
}
}{
"code": "<string>",
"detail": "Property foo is required but is missing.",
"errors": [
{
"location": "<string>",
"message": "<string>",
"value": "<unknown>"
}
],
"instance": "https://example.com/error-log/abc123",
"status": 400,
"title": "Bad Request",
"type": "https://example.com/errors/example",
"upstream": {
"code": "E4001",
"message": "account not found at provider"
}
}{
"code": "<string>",
"detail": "Property foo is required but is missing.",
"errors": [
{
"location": "<string>",
"message": "<string>",
"value": "<unknown>"
}
],
"instance": "https://example.com/error-log/abc123",
"status": 400,
"title": "Bad Request",
"type": "https://example.com/errors/example",
"upstream": {
"code": "E4001",
"message": "account not found at provider"
}
}{
"code": "<string>",
"detail": "Property foo is required but is missing.",
"errors": [
{
"location": "<string>",
"message": "<string>",
"value": "<unknown>"
}
],
"instance": "https://example.com/error-log/abc123",
"status": 400,
"title": "Bad Request",
"type": "https://example.com/errors/example",
"upstream": {
"code": "E4001",
"message": "account not found at provider"
}
}{
"code": "<string>",
"detail": "Property foo is required but is missing.",
"errors": [
{
"location": "<string>",
"message": "<string>",
"value": "<unknown>"
}
],
"instance": "https://example.com/error-log/abc123",
"status": 400,
"title": "Bad Request",
"type": "https://example.com/errors/example",
"upstream": {
"code": "E4001",
"message": "account not found at provider"
}
}{
"code": "<string>",
"detail": "Property foo is required but is missing.",
"errors": [
{
"location": "<string>",
"message": "<string>",
"value": "<unknown>"
}
],
"instance": "https://example.com/error-log/abc123",
"status": 400,
"title": "Bad Request",
"type": "https://example.com/errors/example",
"upstream": {
"code": "E4001",
"message": "account not found at provider"
}
}{
"code": "<string>",
"detail": "Property foo is required but is missing.",
"errors": [
{
"location": "<string>",
"message": "<string>",
"value": "<unknown>"
}
],
"instance": "https://example.com/error-log/abc123",
"status": 400,
"title": "Bad Request",
"type": "https://example.com/errors/example",
"upstream": {
"code": "E4001",
"message": "account not found at provider"
}
}{
"code": "<string>",
"detail": "Property foo is required but is missing.",
"errors": [
{
"location": "<string>",
"message": "<string>",
"value": "<unknown>"
}
],
"instance": "https://example.com/error-log/abc123",
"status": 400,
"title": "Bad Request",
"type": "https://example.com/errors/example",
"upstream": {
"code": "E4001",
"message": "account not found at provider"
}
}{
"code": "<string>",
"detail": "Property foo is required but is missing.",
"errors": [
{
"location": "<string>",
"message": "<string>",
"value": "<unknown>"
}
],
"instance": "https://example.com/error-log/abc123",
"status": 400,
"title": "Bad Request",
"type": "https://example.com/errors/example",
"upstream": {
"code": "E4001",
"message": "account not found at provider"
}
}Record the B3 registration of a loan application
Records the instrument code (Código IF) B3 assigned when the client registered this contract, with the registration date and the CCB number when informed. The Lender stores it and commands nothing at B3. An approved or disbursed direct-credit contract takes it; a payroll-gateway contract informs it at the gateway (409 LENDER-0972). It is written once: the same values answer the stored registration with X-Idempotency-Replayed: true, and any other value, a field the first call left out included, is refused with 409 LENDER-0973 and writes nothing.
curl --request PUT \
--url https://lender.sandbox.lerian.net/api/v1/br/loan-applications/{id}/b3-registration \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"instrumentCode": "CCB0000ABCD12",
"ccbNumber": "TRN-000123",
"registrationDate": "2026-10-08"
}
'package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://lender.sandbox.lerian.net/api/v1/br/loan-applications/{id}/b3-registration"
payload := strings.NewReader("{\n \"instrumentCode\": \"CCB0000ABCD12\",\n \"ccbNumber\": \"TRN-000123\",\n \"registrationDate\": \"2026-10-08\"\n}")
req, _ := http.NewRequest("PUT", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}const options = {
method: 'PUT',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
instrumentCode: 'CCB0000ABCD12',
ccbNumber: 'TRN-000123',
registrationDate: '2026-10-08'
})
};
fetch('https://lender.sandbox.lerian.net/api/v1/br/loan-applications/{id}/b3-registration', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));import requests
url = "https://lender.sandbox.lerian.net/api/v1/br/loan-applications/{id}/b3-registration"
payload = {
"instrumentCode": "CCB0000ABCD12",
"ccbNumber": "TRN-000123",
"registrationDate": "2026-10-08"
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.put(url, json=payload, headers=headers)
print(response.text){
"instrumentCode": "<string>",
"loanApplicationId": "<string>",
"recordedAt": "<string>",
"ccbNumber": "<string>",
"registrationDate": "<string>"
}{
"code": "<string>",
"detail": "Property foo is required but is missing.",
"errors": [
{
"location": "<string>",
"message": "<string>",
"value": "<unknown>"
}
],
"instance": "https://example.com/error-log/abc123",
"status": 400,
"title": "Bad Request",
"type": "https://example.com/errors/example",
"upstream": {
"code": "E4001",
"message": "account not found at provider"
}
}{
"code": "<string>",
"detail": "Property foo is required but is missing.",
"errors": [
{
"location": "<string>",
"message": "<string>",
"value": "<unknown>"
}
],
"instance": "https://example.com/error-log/abc123",
"status": 400,
"title": "Bad Request",
"type": "https://example.com/errors/example",
"upstream": {
"code": "E4001",
"message": "account not found at provider"
}
}{
"code": "<string>",
"detail": "Property foo is required but is missing.",
"errors": [
{
"location": "<string>",
"message": "<string>",
"value": "<unknown>"
}
],
"instance": "https://example.com/error-log/abc123",
"status": 400,
"title": "Bad Request",
"type": "https://example.com/errors/example",
"upstream": {
"code": "E4001",
"message": "account not found at provider"
}
}{
"code": "<string>",
"detail": "Property foo is required but is missing.",
"errors": [
{
"location": "<string>",
"message": "<string>",
"value": "<unknown>"
}
],
"instance": "https://example.com/error-log/abc123",
"status": 400,
"title": "Bad Request",
"type": "https://example.com/errors/example",
"upstream": {
"code": "E4001",
"message": "account not found at provider"
}
}{
"code": "<string>",
"detail": "Property foo is required but is missing.",
"errors": [
{
"location": "<string>",
"message": "<string>",
"value": "<unknown>"
}
],
"instance": "https://example.com/error-log/abc123",
"status": 400,
"title": "Bad Request",
"type": "https://example.com/errors/example",
"upstream": {
"code": "E4001",
"message": "account not found at provider"
}
}{
"code": "<string>",
"detail": "Property foo is required but is missing.",
"errors": [
{
"location": "<string>",
"message": "<string>",
"value": "<unknown>"
}
],
"instance": "https://example.com/error-log/abc123",
"status": 400,
"title": "Bad Request",
"type": "https://example.com/errors/example",
"upstream": {
"code": "E4001",
"message": "account not found at provider"
}
}{
"code": "<string>",
"detail": "Property foo is required but is missing.",
"errors": [
{
"location": "<string>",
"message": "<string>",
"value": "<unknown>"
}
],
"instance": "https://example.com/error-log/abc123",
"status": 400,
"title": "Bad Request",
"type": "https://example.com/errors/example",
"upstream": {
"code": "E4001",
"message": "account not found at provider"
}
}{
"code": "<string>",
"detail": "Property foo is required but is missing.",
"errors": [
{
"location": "<string>",
"message": "<string>",
"value": "<unknown>"
}
],
"instance": "https://example.com/error-log/abc123",
"status": 400,
"title": "Bad Request",
"type": "https://example.com/errors/example",
"upstream": {
"code": "E4001",
"message": "account not found at provider"
}
}{
"code": "<string>",
"detail": "Property foo is required but is missing.",
"errors": [
{
"location": "<string>",
"message": "<string>",
"value": "<unknown>"
}
],
"instance": "https://example.com/error-log/abc123",
"status": 400,
"title": "Bad Request",
"type": "https://example.com/errors/example",
"upstream": {
"code": "E4001",
"message": "account not found at provider"
}
}{
"code": "<string>",
"detail": "Property foo is required but is missing.",
"errors": [
{
"location": "<string>",
"message": "<string>",
"value": "<unknown>"
}
],
"instance": "https://example.com/error-log/abc123",
"status": 400,
"title": "Bad Request",
"type": "https://example.com/errors/example",
"upstream": {
"code": "E4001",
"message": "account not found at provider"
}
}Authorizations
JWT bearer token issued by the identity provider.
Path Parameters
Loan application identifier.
Body
The instrument code (Código IF) B3 assigned when the client registered the contract: 1 to 14 letters and digits, stored exactly as sent.
^[A-Za-z0-9]{1,14}$"CCB0000ABCD12"
The client's number for the contract's CCB, with no leading or trailing space and no control character. Optional.
64^[^\s\x00-\x1F\x7F](?:[^\x00-\x1F\x7F]*[^\s\x00-\x1F\x7F])?$"TRN-000123"
The civil day B3 registered the contract (YYYY-MM-DD), from the approval day to today in Brasília. Optional.
"2026-10-08"
Response
OK
The B3 instrument code (Código IF), as the client sent it.
Loan application identifier (uuid).
When the Lender recorded it (RFC3339, UTC).
The client's number for the contract's CCB. Absent when not informed.
The civil day B3 registered the contract (YYYY-MM-DD). Absent when not informed.
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