PSE is an online bank transfer system in Colombia that allows customers to pay directly from their bank accounts securely. Bamboo supports two payment flows depending on the merchant integration model.

Payment Flow

Merchant-managed bank list

Retrieve the list of available banks using the Bank List API and display it in your checkout.

Bamboo-managed redirection

If the merchant does not send a bank code, Bamboo automatically shows the list of available banks.

(Optional – Merchant-managed flow) If the merchant sends the bank code and customer type, Bamboo skips the PSE selection screen and redirects directly to the PSE flow.
The payer accesses the PSE page to confirm their email and identify as a Natural or Legal person.
PSE redirects the payer to their selected bank’s website to log in and authorize the payment.
The bank processes the transaction through the PSE network and displays a payment confirmation screen.
Bamboo redirects the payer to the merchant’s result URL (APPROVED, REJECTED, or PENDING) and sends the final status asynchronously to the configured Webhook URL.

💡
When the merchant does not send the bank code, Bamboo handles the redirection to the PSE interface automatically. If the bank code is included, the customer is taken directly to their selected bank’s login page.

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Redirect Flow for PSE
This payment method uses a Redirect flow. The API response includes an Action and the purchase remains in Pending status until the customer completes the payment in the Internet Banking.

Request parameters

The following parameters are required specifically for this payment method.
Refer to the Purchase operation guide for standard fields and authentication requirements.

Property	Type	Mandatory?	Description
`PaymentMethod`	`string`	Yes	Use `PSE` as the payment method code. Find the value in the table Payment Method
`TargetCountryISO`	`string`	Yes	Destination country, must be `CO`.
`Customer` → `Email`	`string`	Yes	Customer’s email.
`Customer` → `FirstName`	`string`	Yes	Customer’s first name.
`Customer` → `LastName`	`string`	Yes	Customer’s last name.
`Customer` → `DocumentType`	`string`	Yes	Customer’s document type. See Document types.
`Customer` → `DocumentNumber`	`string`	Yes	Customer’s document number.
`Customer` → `PhoneNumber`	`string`	Yes	Customer’s phone number.
`Customer` → `Address` → `Country`	`string`	No	Country ISO code (`CO`).
`Customer` → `Address` → `State`	`string`	No	Department or state of residence.
`Customer` → `Address` → `City`	`string`	No	City of residence.
`Customer` → `Address` → `AddressDetail`	`string`	Yes	Street address and number.
`Customer` → `Address` → `PostalCode`	`string`	No	Postal or ZIP code.
`MetaDataIn` → `financialInstitutionCode`	`string`	Conditional	Bank code from the Bank List Endpoint. If not sent, Bamboo handles bank selection.
`MetaDataIn` → `personType`	`string`	Conditional	Type of person performing the transaction: `1` = Natural Person, `2` = Legal Entity.
`MetaDataIn` → `identificationType`	`string`	Conditional	Identification type for the transaction. `RegistroCivilDeNacimiento`, `TarjetaDeIdentidad`, `CedulaDeCiudadania`, `TarjetaDeExtranjeria`, `CedulaDeExtranjeria`, `Pasaporte`, `DocumentoDeIdentificacionExtranjero`, `NIT`.
`Redirection` → `Url_Approved`	`string`	No	URL to redirect when the payment is Approved.
`Redirection` → `Url_Rejected`	`string`	No	URL to redirect when the payment is Rejected.
`Redirection` → `Url_Canceled`	`string`	No	URL to redirect when the payment is Canceled.
`Redirection` → `Url_Pending`	`string`	No	URL to redirect when the payment is Pending.
`Redirection` → `Url_Notify`	`string`	No	Webhook endpoint to receive asynchronous status updates.

ℹ️
If the financialInstitutionCode is not provided, Bamboo displays the bank list automatically during redirection. The default expiration time for PSE transactions is 21 minutes and cannot be modified.

Request example

To test this endpoint, use the API Reference or the Postman Collection

{
  "PaymentMethod": "PSE",
  "Order": "CO-PSE-001",
  "Amount": 250000,
  "Currency": "COP",
  "Description": "Online purchase via PSE",
  "TargetCountryISO": "CO",
  "Customer": {
    "FirstName": "María",
    "LastName": "López",
    "Email": "[email protected]",
    "DocumentType": "CC.CO",
    "DocumentNumber": "10203040",
    "PhoneNumber": "3001234567",
    "Address": {
      "AddressDetail": "Calle 123 #45-67",
      "City": "Bogotá D.C",
      "State": "Bogota D.C",
      "Country": "CO"
    }
  },
  "MetaDataIn": {
    "financialInstitutionCode": "1051",
    "personType": "1",
    "identificationType": "CedulaDeCiudadania"
  },
  "Redirection": {
    "Url_Approved": "https://merchant.com/checkout/success",
    "Url_Rejected": "https://merchant.com/checkout/failure",
    "Url_Pending": "https://merchant.com/checkout/pending"
  }
}

Response parameters

The API returns the purchase with status PENDING and an Action object that indicates a redirection is required. Depending on the integration flow:

If the bank code was included (financialInstitutionCode), the customer is redirected directly to the selected bank.
If no bank code was provided, Bamboo displays the PSE selection screen (step 1) where the customer can choose their bank.

Property	Type	Description
`Action` → `URL`	`string`	URL where the payer is redirected to complete the payment. This can be either the selected bank’s login page or the PSE bank selection interface.
`Action` → `Reason`	`string`	Returns `REDIRECTION_NEEDED_EXTERNAL_SERVICE` to indicate that user action is required on an external site.
`Status`	`string`	Current purchase status. For PSE payments, it is returned as `PENDING` until the bank confirms the transaction.
`MetadataOut` → `PaymentExpirationDate`	`date`	Expiration date and time of the transaction. The default validity is 21 minutes and cannot be changed.
`TransactionId`	`string`	Unique identifier of the transaction generated by Bamboo.
`PaymentMethod` → `Brand`	`string`	Returns `PSE`. Identifies the payment method used.
`PaymentMethod` → `Type`	`string`	Indicates the payment method type. For PSE, the value is `BankTransfer`.

ℹ️
The payer will be redirected to one of the URLs defined in the Redirection object based on the final transaction result (Approved, Rejected, Canceled, or Pending). Bamboo also sends an asynchronous notification to the Webhook URL configured in the request or merchant account.

Example response

{
    "TransactionId": "79632697147789184",
    "Result": "ACTION_REQUIRED",
    "Status": "PENDING",
    "ErrorCode": null,
    "ErrorDescription": null,
    "Created": "2024-08-07T17:51:54.620",
    "AuthorizationDate": null,
    "AuthorizationCode": null,
    "Amount": 100000,
    "Currency": "COP",
    "TaxableAmount": null,
    "Tip": null,
    "Url": "https://api.stage.bamboopayment.com/Purchase/79632697147789184",
    "MetadataOut":null,
    "Action": {
        "SessionId": "CA_cc155768-74d9-4efd-8e55-42411b4dd3cf",
        "URL": "https://redirect.stage.bamboopayment.com/CA_cc155768-74d9-4efd-8e55-42411b4dd3cf",
        "Reason": "REDIRECTION_NEEDED_EXTERNAL_SERVICE"
    },
     "PaymentMethod": {
        "Brand": "PseAvanza",
        "CardOwner": null,
        "Bin": null,
        "IssuerBank": null,
        "Type": "BankTransfer",
        "Expiration": null,
        "Last4": null
    }
}

Bank List Endpoint

Merchants can retrieve the list of available banks for PSE payments using this endpoint. The result includes each bank’s code and name, which must be used in the MetaDataIn → financialInstitutionCode field when the merchant handles bank selection manually.

Environment	URL
Staging	`https://pse.stage.bamboopayment.com/api/Bank/GetBanks`
Production	`https://pse.prod.bamboopayment.com/api/Bank/GetBanks`

Response parameters

Property	Type	Description
`bankCode`	`string`	Bank identification code used in the `MetaDataIn.financialInstitutionCode` field.
`bankName`	`string`	Official name of the bank.
`status`	`string`	Indicates whether the bank is currently available (`ACTIVE`) or temporarily disabled (`INACTIVE`).

Example response

{
  "banks": [
    {
      "bankCode": "1051",
      "bankName": "Banco de Bogotá",
      "status": "ACTIVE"
    },
    {
      "bankCode": "1052",
      "bankName": "Bancolombia",
      "status": "ACTIVE"
    },
    {
      "bankCode": "1061",
      "bankName": "Davivienda",
      "status": "ACTIVE"
    }
  ]
}

ℹ️
Use the bankCode value to redirect the payer directly to their selected bank by including it in the MetaDataIn → financialInstitutionCode field of the purchase request.

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