# Get hierarchy

Retrieves a hierarchy by its ID.

# OpenAPI definition

```json
{
  "openapi": "3.0.0",
  "info": {
    "title": "Banking - Transaction banking",
    "version": "0.9.0",
    "description": "Transaction banking API",
    "contact": {
      "name": "API Support",
      "url": "https://developers.pismo.io/support/"
    },
    "license": {
      "name": "Copyright Pismo"
    }
  },
  "servers": [
    {
      "url": "https://sandbox.pismolabs.io",
      "description": "Sandbox API server for testing"
    }
  ],
  "security": [
    {
      "BearerAuth": []
    }
  ],
  "tags": [
    {
      "name": "Hierarchies",
      "description": "Hierarchy-related endpoints"
    }
  ],
  "components": {
    "parameters": {
      "HierarchyIdPath": {
        "name": "hierarchyId",
        "in": "path",
        "description": "Hierarchy ID",
        "schema": {
          "type": "string"
        },
        "required": true,
        "example": "1234"
      }
    },
    "schemas": {
      "CreateHierarchiesResponse": {
        "description": "Create hierarchy response object",
        "type": "object",
        "properties": {
          "id": {
            "$ref": "#/components/schemas/HierarchyIdGeneratedInternally"
          },
          "levels": {
            "type": "array",
            "items": {
              "type": "object",
              "properties": {
                "id": {
                  "$ref": "#/components/schemas/LevelIdGeneratedInternally"
                },
                "index": {
                  "$ref": "#/components/schemas/HierarchyLevelIndex"
                },
                "name": {
                  "$ref": "#/components/schemas/HierarchyLevelName"
                },
                "description": {
                  "$ref": "#/components/schemas/HierarchyLevelDescription"
                }
              },
              "required": [
                "id",
                "index",
                "name"
              ]
            }
          },
          "name": {
            "type": "string",
            "description": "Hierarchy One"
          }
        },
        "required": [
          "id",
          "levels"
        ]
      },
      "ErrorCode": {
        "description": "Error code\n`minLength: 1`\n`maxLength: 12`\n",
        "type": "string",
        "minLength": 1,
        "maxLength": 12,
        "example": "WPMT0017"
      },
      "ErrorMessage": {
        "description": "Error message\n`minLength: 1`\n`maxLength: 1000`\n",
        "type": "string",
        "minLength": 1,
        "maxLength": 1000,
        "example": "Invalid JSON payload received: Error unmarshalling request"
      },
      "ErrorResponse": {
        "type": "object",
        "properties": {
          "code": {
            "$ref": "#/components/schemas/ErrorCode"
          },
          "message": {
            "$ref": "#/components/schemas/ErrorMessage"
          }
        }
      },
      "HierarchyIdGeneratedInternally": {
        "type": "string",
        "description": "Hierarchy ID generated internally",
        "format": "uuid"
      },
      "HierarchyLevelDescription": {
        "type": "string",
        "description": "Hierarchy level description",
        "maxLength": 80
      },
      "HierarchyLevelIndex": {
        "type": "integer",
        "format": "int32",
        "description": "Hierarchy level index",
        "minimum": 0,
        "maximum": 9,
        "example": 2
      },
      "HierarchyLevelName": {
        "type": "string",
        "description": "Hierarchy level name",
        "maxLength": 40
      },
      "LevelIdGeneratedInternally": {
        "type": "string",
        "description": "Level ID generated internally"
      }
    },
    "responses": {
      "500InternalServer": {
        "description": "Internal Server Error",
        "content": {
          "application/json": {
            "schema": {
              "$ref": "#/components/schemas/ErrorResponse"
            },
            "examples": {
              "Generic internal error": {
                "value": {
                  "code": "ECMN9999",
                  "message": "Internal error"
                }
              }
            }
          }
        }
      }
    },
    "securitySchemes": {
      "BearerAuth": {
        "type": "http",
        "scheme": "bearer",
        "bearerFormat": "JWT"
      }
    }
  },
  "paths": {
    "/corporate/v1/hierarchies/{hierarchyId}": {
      "get": {
        "summary": "Get hierarchy",
        "operationId": "getHierarchy",
        "description": "Retrieves a hierarchy by its ID.",
        "parameters": [
          {
            "$ref": "#/components/parameters/HierarchyIdPath"
          }
        ],
        "tags": [
          "Hierarchies"
        ],
        "responses": {
          "200": {
            "description": "OK",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/CreateHierarchiesResponse"
                }
              }
            }
          },
          "500": {
            "$ref": "#/components/responses/500InternalServer"
          }
        }
      }
    }
  }
}
```