> For the complete documentation index, see [llms.txt](https://selenium-4.gitbook.io/nexus-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://selenium-4.gitbook.io/nexus-docs/documentation/loan/operations/main-1.md).

# Update Loan Details

## Update Loan Details

> Updates a loan's amount, maturity date, repayment schedule and/or the reason for the change.

```json
{"openapi":"3.0.3","info":{"title":"NEXUS Banking Services API","version":"1.0.0"},"tags":[{"name":"loan"}],"servers":[{"url":"https://sandbox.nexus.selenium.ao","description":"Sandbox"},{"url":"https://api-mock.selenium.ao","description":"Mock"}],"security":[{"bearerAuth":[]}],"components":{"securitySchemes":{"bearerAuth":{"type":"http","scheme":"bearer","description":"Bearer Token (OAuth2 / OIDC or JWT) passed in the `Authorization` header."}},"schemas":{"TypedDate":{"type":"object","description":"Date paired with a type/role describing what it represents.","properties":{"dateContent":{"type":"string","format":"date","description":"The date value."},"dateType":{"type":"string","description":"Role of the date (e.g. `MaturityDate`, `RepaymentStartDate`)."}}},"ErrorEnvelope":{"type":"object","properties":{"error":{"$ref":"#/components/schemas/Error"}}},"Error":{"type":"object","required":["status","reason","message","path"],"properties":{"status":{"type":"integer","description":"HTTP status code of the error."},"reason":{"type":"string","description":"High-level error category code."},"message":{"type":"string","description":"Human-readable description of the problem."},"path":{"type":"string","description":"HTTP method and endpoint path that originated the error."},"errordetail":{"type":"array","description":"Detailed error list. May be absent for generic errors (e.g. 500).","items":{"$ref":"#/components/schemas/ErrorDetail"}}}},"ErrorDetail":{"type":"object","properties":{"code":{"type":"string","description":"Domain-specific error code."},"reason":{"type":"string","description":"Textual identifier of the specific cause."},"message":{"type":"string","description":"Detailed message, with concrete values where applicable."}}}},"responses":{"BadRequest":{"description":"The request payload is invalid — inconsistent dates, an amount ≤ 0, an invalid currency, or missing required fields.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ErrorEnvelope"}}}},"InternalServerError":{"description":"Unexpected internal error.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ErrorEnvelope"}}}}}},"paths":{"/v1/loans/{loanId}/update":{"put":{"summary":"Update Loan Details","description":"Updates a loan's amount, maturity date, repayment schedule and/or the reason for the change.","tags":["loan"],"operationId":"updateLoanDetails","parameters":[{"name":"loanId","in":"path","required":true,"description":"Loan account number.","schema":{"type":"string"}}],"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"loanAmount":{"type":"object","description":"Total capital of the loan.","properties":{"amountValue":{"type":"number","format":"double","description":"Capital amount of the loan."},"amountCurrency":{"type":"object","description":"Currency of the loan account, related to the capital.","properties":{"CurrencyCode":{"type":"string","description":"ISO 4217 currency code."}}},"amountType":{"type":"string","default":"LoanPrincipal","description":"Type of amount."}}},"loanMaturityDate":{"type":"object","properties":{"dateContent":{"type":"string","format":"date","description":"New maturity date of the loan to be updated."}}},"loanRepaymentSchedule":{"type":"object","description":"Repayment schedule of the loan.","properties":{"repaymentScheduleFrequency":{"type":"string","description":"Description of the repayment installment frequency."},"repaymentScheduleFrequencyCode":{"type":"string","description":"Code of the repayment installment frequency. `M`=Mensal, `Q`=Quinzenal, `R`=Quadrimestral, `S`=Semestral, `T`=Trimestral, `U`=Fim de mês, `W`=Semanal, `Y`=Anual, `F`=Fim Trimestre, `G`=Fim Semestre, `I`=Bimestral.","enum":["M","Q","R","S","T","U","W","Y","F","G","I"]},"repaymentScheduleCount":{"type":"integer","description":"Total number of installments (including amortization and interest)."},"repaymentSchedulePeriod":{"type":"object","properties":{"fromDate":{"allOf":[{"$ref":"#/components/schemas/TypedDate"}],"description":"Start date of the installments (ISO 8601)."},"toDate":{"allOf":[{"$ref":"#/components/schemas/TypedDate"}],"description":"End date of the installments (ISO 8601)."}}}}},"loanChangeReason":{"type":"object","properties":{"reasonCode":{"type":"string","description":"Reason code for the update. `P`=Prorrogação, `V`=Alteração de prazo.","enum":["P","V"]},"reasonDescription":{"type":"string","maxLength":40,"description":"Free-text note on the loan update."}}}}}}}},"responses":{"200":{"description":"Loan details updated successfully."},"400":{"$ref":"#/components/responses/BadRequest"},"500":{"$ref":"#/components/responses/InternalServerError"}}}}}}
```


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