# Retrieves a list installment plan periods that belong to this installment plan

Retrieves a list of installment plan periods that belong to this installment plan.

Endpoint: GET /installment_plans/{id}/installment_plan_periods
Version: v1
Security: apiKey

## Path parameters:

  - `id` (string, required)

## Response 200 fields (application/json):

  - `type` (string, required)
    Enum: "list"

  - `data` (array, required)
    Example: [{"id":"IPD344S1PDY8XX","type":"installment_plan_period","amount":1500,"period_number":1,"installment_plan":"PIUJDW4VCMG9JS","state":"paid","payments":{"type":"list","data":[{"id":"PPH25H07JYWLR7PA82","type":"payment","amount":1000,"description":"Test Payment","currency":"EUR","state":"paid","refunded_amount":0,"return_url":"https://example.com/thank-you","cancel_url":"https://example.com/cancel","paid_at":"2023-06-30T12:44:35Z","created_at":"2023-06-30T12:40:10Z","_links":{"self":"https://api.paypro.nl/payments/PPH25H07JYWLR7PA82"}}],"count":1,"_links":{"self":"https://api.paypro.nl/installment_plan_periods/SPD344S1PDY8XX/payments"}},"created_at":"2023-06-30T12:40:10Z","_links":{"self":"https://api.paypro.nl/installment_plan_periods/IPD344S1PDY8XX","installment_plan":"https://api.paypro.nl/installment_plans/PIUJDW4VCMG9JS"}}]

  - `data.id` (string, required)
    Example: "IPD344S1PDY8XX"

  - `data.amount` (integer, required)
    Example: 1500

  - `data.period_number` (integer, required)
    Example: 1

  - `data.installment_plan` (string, required)
    Example: "PIUJDW4VCMG9JS"

  - `data.state` (string, required)
    Enum: "open", "pending", "paid", "canceled", "reversed", "refunded"

  - `data.payments` (object, required)
    Example: {"type":"list","data":[{"id":"PPH25H07JYWLR7PA82","type":"payment","amount":1000,"description":"Test Payment","currency":"EUR","state":"paid","refunded_amount":0,"return_url":"https://example.com/thank-you","cancel_url":"https://example.com/cancel","paid_at":"2023-06-30T12:44:35Z","created_at":"2023-06-30T12:40:10Z","_links":{"self":"https://api.paypro.nl/payments/PPH25H07JYWLR7PA82"}}],"count":1,"_links":{"self":"https://api.paypro.nl/installment_plan_periods/SPD344S1PDY8XX/payments"}}

  - `data.payments.count` (integer, required)
    Example: 1

  - `data.payments._links` (object, required)
    Example: {"self":"https://api.paypro.nl/installment_plan_periods/SPD344S1PDY8XX/payments"}

  - `data.payments._links.self` (string, required)
    Example: "https://api.paypro.nl/installment_plan_periods/SPD344S1PDY8XX/payments"

  - `data.created_at` (string, required)
    Example: "2023-06-30T12:40:10Z"