curl --request GET \
  --url https://api.yapily.com/institutions/constraints/payments \
  --header 'Authorization: Basic <encoded-value>'

{
  "meta": {
    "tracingId": "661471ddb4344113a2d185b861cb3dcf"
  },
  "data": [
    {
      "institutionId": "mock-sandbox",
      "institutionCountryCode": "GB",
      "endpointPath": "/payments",
      "endpointMethod": "POST",
      "paymentType": "DOMESTIC_PAYMENT",
      "request": {
        "headers": {
          "title": "Header",
          "type": "object",
          "properties": {
            "psuID": {
              "title": "PSU Id",
              "type": "string",
              "description": ""
            }
          }
        },
        "body": {
          "title": "Payment Request",
          "required": [
            "payee",
            "amount",
            "paymentIdempotencyId",
            "type"
          ],
          "type": "object",
          "properties": {
            "paymentIdempotencyId": {
              "title": "Payment Idempotency Id",
              "pattern": "^.{1,35}$",
              "type": "string",
              "description": "Id for the payment"
            },
            "type": {
              "enum": [
                "DOMESTIC_PAYMENT"
              ],
              "title": "Payment Type",
              "type": "string",
              "description": "type of the payment"
            },
            "contextType": {
              "default": "OTHER",
              "enum": [
                "BILL",
                "GOODS",
                "SERVICES",
                "OTHER",
                "PERSON_TO_PERSON"
              ],
              "title": "Context Type",
              "type": "string",
              "description": "__Optional__. The payment context code. This defaults to `OTHER` if not specified."
            },
            "reference": {
              "title": "Reference",
              "pattern": "^.{1,18}$",
              "type": "string",
              "description": "__Mandatory__. The payment reference or description. Limited to a maximum of 18 characters long.",
              "example": "Bill payment"
            },
            "payee": {
              "title": "Payee",
              "required": [
                "accountIdentifications",
                "name"
              ],
              "type": "object",
              "properties": {
                "name": {
                  "title": "Name",
                  "pattern": "^.{1,18}$",
                  "type": "string",
                  "description": "__Mandatory__. The account holder name of the beneficiary.",
                  "example": "Jane Doe"
                },
                "accountIdentifications": {
                  "title": "Account Identifications",
                  "type": "array",
                  "items": {
                    "required": [
                      "identification",
                      "type"
                    ],
                    "type": "object",
                    "properties": {
                      "type": {
                        "title": "Account Identification Type",
                        "type": "string",
                        "description": "__Mandatory__. Used to describe the format of the account.\n\n See [Account Identification Combinations](/payments/payment-resources/intro-to-payment-execution#account-identifications-combinations) for more information on when to specify each type."
                      },
                      "identification": {
                        "title": "Account Identification",
                        "type": "string",
                        "description": "__Mandatory__. The value associated with the account identification type.\n\n See [Account Identification Combinations](/payments/payment-resources/intro-to-payment-execution#account-identifications-combinations) for more information on the format of the values."
                      }
                    }
                  },
                  "description": "__Mandatory__. The account identifications that identify the `Payee` bank account."
                },
                "address": {
                  "title": "Address",
                  "type": "object",
                  "properties": {
                    "addressLines": {
                      "title": "Address Lines",
                      "type": "array",
                      "items": {
                        "title": "Address Line",
                        "type": "string"
                      },
                      "description": "__Optional__. The address line of the address"
                    },
                    "streetName": {
                      "title": "Street Name",
                      "type": "string",
                      "description": "__Optional__. The street name of the address"
                    },
                    "buildingNumber": {
                      "title": "Building Number",
                      "type": "string",
                      "description": "__Optional__. The building number of the address"
                    },
                    "postCode": {
                      "title": "Postcode",
                      "type": "string",
                      "description": "__Optional__. The post code of the address"
                    },
                    "townName": {
                      "title": "Town",
                      "type": "string",
                      "description": "__Optional__. The town name of the address"
                    },
                    "county": {
                      "title": "County",
                      "type": "array",
                      "items": {
                        "type": "string"
                      },
                      "description": "__Optional__. The list of counties for the address"
                    },
                    "country": {
                      "title": "Country",
                      "type": "string",
                      "description": "__Conditional__. The 2-letter country code for the address. \n\nAn `Institution` may require you to specify the `country` when used in the context of the `Payee` to be able to make a payment"
                    },
                    "department": {
                      "title": "Department",
                      "type": "string",
                      "description": "__Optional__. The department for the address"
                    },
                    "subDepartment": {
                      "title": "Sub-department",
                      "type": "string",
                      "description": "__Optional__. The sub-department for the address"
                    },
                    "addressType": {
                      "enum": [
                        "BUSINESS",
                        "CORRESPONDENCE",
                        "DELIVERY_TO",
                        "MAIL_TO",
                        "PO_BOX",
                        "POSTAL",
                        "RESIDENTIAL",
                        "STATEMENT",
                        "UNKNOWN"
                      ],
                      "title": "Address Type",
                      "type": "string",
                      "description": "__Optional__. The type of address"
                    }
                  },
                  "description": "__Conditional__. The address of the `Payee` or `Payer`."
                }
              },
              "description": "__Mandatory__. Details of the beneficiary [person or business]."
            },
            "payer": {
              "title": "Payer",
              "required": [
                "accountIdentifications"
              ],
              "type": "object",
              "properties": {
                "accountIdentifications": {
                  "title": "Account Identifications",
                  "type": "array",
                  "items": {
                    "required": [
                      "identification",
                      "type"
                    ],
                    "type": "object",
                    "properties": {
                      "type": {
                        "enum": [
                          "IBAN"
                        ],
                        "title": "Account Identification Type",
                        "type": "string",
                        "description": "__Mandatory__. Should be IBAN only."
                      },
                      "identification": {
                        "title": "Account Identification",
                        "pattern": "DE\\d{20}",
                        "type": "string",
                        "description": "__Mandatory__. The IBAN value associated with the account identity"
                      }
                    }
                  },
                  "description": "__Mandatory__. The account identifications that identify the `Payer` bank account."
                },
                "address": {
                  "title": "Address",
                  "type": "object",
                  "properties": {
                    "addressLines": {
                      "title": "Address Lines",
                      "type": "array",
                      "items": {
                        "title": "Address Line",
                        "type": "string"
                      },
                      "description": "__Optional__. The address line of the address"
                    },
                    "streetName": {
                      "title": "Street Name",
                      "type": "string",
                      "description": "__Optional__. The street name of the address"
                    },
                    "buildingNumber": {
                      "title": "Building Number",
                      "type": "string",
                      "description": "__Optional__. The building number of the address"
                    },
                    "postCode": {
                      "title": "Postcode",
                      "type": "string",
                      "description": "__Optional__. The post code of the address"
                    },
                    "townName": {
                      "title": "Town",
                      "type": "string",
                      "description": "__Optional__. The town name of the address"
                    },
                    "county": {
                      "title": "County",
                      "type": "array",
                      "items": {
                        "type": "string"
                      },
                      "description": "__Optional__. The list of counties for the address"
                    },
                    "country": {
                      "title": "Country",
                      "type": "string",
                      "description": "__Conditional__. The 2-letter country code for the address. \n\nAn `Institution` may require you to specify the `country` when used in the context of the `Payee` to be able to make a payment"
                    },
                    "department": {
                      "title": "Department",
                      "type": "string",
                      "description": "__Optional__. The department for the address"
                    },
                    "subDepartment": {
                      "title": "Sub-department",
                      "type": "string",
                      "description": "__Optional__. The sub-department for the address"
                    },
                    "addressType": {
                      "enum": [
                        "BUSINESS",
                        "CORRESPONDENCE",
                        "DELIVERY_TO",
                        "MAIL_TO",
                        "PO_BOX",
                        "POSTAL",
                        "RESIDENTIAL",
                        "STATEMENT",
                        "UNKNOWN"
                      ],
                      "title": "Address Type",
                      "type": "string",
                      "description": "__Optional__. The type of address"
                    }
                  },
                  "description": "__Conditional__. The address of the `Payee` or `Payer`."
                }
              }
            },
            "amount": {
              "title": "Amount",
              "required": [
                "amount",
                "currency"
              ],
              "type": "object",
              "properties": {
                "amount": {
                  "title": "Amount",
                  "minimum": 0,
                  "type": "number",
                  "description": "__Mandatory__. The monetary value"
                },
                "currency": {
                  "title": "Currency",
                  "pattern": "^[A-Z]{3,3}$",
                  "type": "string",
                  "description": "__Mandatory__. The [ISO 4217](https://www.xe.com/iso4217.php) currency code"
                }
              },
              "description": "__Mandatory__. Monetary Amount."
            },
            "paymentDateTime": {
              "type": "string",
              "description": "__Optional__, If present date should be greater than or equal to current date",
              "format": "date-time"
            }
          },
          "description": "Domestic payment request schema"
        }
      }
    }
  ]
}