> ## Documentation Index
> Fetch the complete documentation index at: https://docs.supermetrics.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Remove an existing custom field

> Remove an existing custom field. Returns HTTP 204 No Content on success.

## OpenAPI

````json DELETE /v1/teams/{team_id}/custom-fields/{custom_field_id}
{
  "openapi": "3.0.3",
  "info": {
    "title": "Management API Reference",
    "version": "2.0.0",
    "description": "API Documentation for the Supermetrics Management API. For more information, visit https://supermetrics.com.",
    "termsOfService": "https://supermetrics.com/terms-of-service",
    "contact": {
      "name": "Supermetrics Suppot",
      "email": "support@supermetrics.com",
      "url": "https://supermetrics.com/support"
    },
    "license": {
      "name": "Apache 2.0",
      "url": "https://www.apache.org/licenses/LICENSE-2.0.html"
    },
    "x-api-id": "sm-management-api",
    "x-audience": "public"
  },
  "servers": [
    {
      "url": "https://api.supermetrics.com/v2",
      "description": "Global production public Supermetrics Management API base path.",
      "x-internal": false
    },
    {
      "url": "https://api.supermetrics.com",
      "description": "Global production public Supermetrics API base path (for Connector Builder and Team endpoints).",
      "x-internal": false
    }
  ],
  "tags": [
    {
      "name": "API Keys",
      "description": "Manage API keys to access Supermetrics API"
    },
    {
      "name": "Saved Queries",
      "description": "Manage queries saved in Query Manager"
    },
    {
      "name": "Datasources",
      "description": "Retrieve datasource configuration details"
    },
    {
      "name": "Data Source Logins",
      "description": "Access your data source authentications and login links"
    },
    {
      "name": "Custom Fields",
      "description": "Create and manage Custom Fields"
    },
    {
      "name": "Account Tags",
      "description": "Group data source accounts into reusable tags"
    },
    {
      "name": "Data Blending",
      "description": "Create and manage Data Blending"
    },
    {
      "name": "Connector Builder",
      "description": "Create and manage custom connectors, including their secrets, logos, logs, and schemas"
    },
    {
      "name": "Teams",
      "description": "View and update team details"
    },
    {
      "name": "Team Users",
      "description": "Manage members and invitations for your team"
    },
    {
      "name": "Team Licenses",
      "description": "Assign and manage your team's licenses"
    },
    {
      "name": "Team Settings",
      "description": "Configure general settings for your team"
    },
    {
      "name": "Workspaces",
      "description": "Create and manage workspaces, their members, and license pools"
    },
    {
      "name": "Data Transfers",
      "description": "Create, configure, and manage Data Warehouse transfers, their runs, backfills, and data source connections"
    },
    {
      "name": "Data Destinations",
      "description": "Create, configure, and manage Data Warehouse destinations"
    },
    {
      "name": "Table Groups",
      "description": "Manage your team's table groups"
    }
  ],
  "externalDocs": {
    "description": "Find out more about Supermetrics Management API",
    "url": "https://docs.supermetrics.com/apidocs/management-api"
  },
  "paths": {
    "/v1/teams/{team_id}/custom-fields/{custom_field_id}": {
      "servers": [
        {
          "url": "https://api.supermetrics.com",
          "description": "production server",
          "x-internal": false
        }
      ],
      "delete": {
        "summary": "Remove an existing custom field",
        "description": "Remove an existing custom field. Returns HTTP 204 No Content on success.",
        "operationId": "deleteTransformation",
        "parameters": [
          {
            "$ref": "#/components/parameters/TeamId"
          },
          {
            "name": "custom_field_id",
            "in": "path",
            "required": true,
            "description": "ID of the custom field",
            "example": 42,
            "schema": {
              "type": "integer",
              "format": "int64",
              "minimum": 1,
              "maximum": 9.223372036854776E+18
            }
          },
          {
            "name": "Sm-App-Id",
            "in": "header",
            "required": false,
            "description": "Application identifier",
            "schema": {
              "type": "string",
              "maxLength": 100,
              "pattern": "^[A-Za-z0-9_-]+$"
            },
            "example": "XPLD"
          }
        ],
        "responses": {
          "204": {
            "description": "Transformation deleted successfully (no content)"
          },
          "400": {
            "$ref": "#/components/responses/BadRequest"
          },
          "401": {
            "$ref": "#/components/responses/Unauthorized"
          },
          "403": {
            "$ref": "#/components/responses/PermissionDenied"
          },
          "404": {
            "$ref": "#/components/responses/NotFound"
          },
          "429": {
            "$ref": "#/components/responses/TooManyRequests"
          },
          "500": {
            "$ref": "#/components/responses/InternalServerError"
          }
        },
        "security": [
          {
            "ApiKeyAuth": [
              "custom_fields_write"
            ]
          }
        ],
        "tags": [
          "Custom Fields"
        ]
      }
    }
  },
  "components": {
    "parameters": {
      "TeamId": {
        "name": "team_id",
        "in": "path",
        "description": "ID of the team",
        "required": true,
        "schema": {
          "type": "integer",
          "format": "int64",
          "minimum": 1,
          "maximum": 9.223372036854776E+18
        },
        "example": 936506
      }
    },
    "responses": {
      "BadRequest": {
        "description": "Bad request - invalid parameters",
        "headers": {
          "X-RateLimit-Limit": {
            "$ref": "#/components/headers/X-RateLimit-Limit"
          },
          "X-RateLimit-Remaining": {
            "$ref": "#/components/headers/X-RateLimit-Remaining"
          },
          "Access-Control-Allow-Origin": {
            "$ref": "#/components/headers/Access-Control-Allow-Origin"
          }
        },
        "content": {
          "application/json": {
            "schema": {
              "$ref": "#/components/schemas/ErrorResponse"
            },
            "example": {
              "meta": {
                "request_id": "BXaEFVtjc7TXaJxgZhmFgSUD9edqq_CN"
              },
              "error": {
                "code": "BAD_REQUEST",
                "message": "The request was invalid."
              }
            }
          }
        }
      },
      "Unauthorized": {
        "description": "Unauthorized",
        "headers": {
          "WWW-Authenticate": {
            "$ref": "#/components/headers/WWW-Authenticate"
          },
          "X-RateLimit-Limit": {
            "$ref": "#/components/headers/X-RateLimit-Limit"
          },
          "X-RateLimit-Remaining": {
            "$ref": "#/components/headers/X-RateLimit-Remaining"
          },
          "Access-Control-Allow-Origin": {
            "$ref": "#/components/headers/Access-Control-Allow-Origin"
          }
        },
        "content": {
          "application/json": {
            "schema": {
              "$ref": "#/components/schemas/ErrorResponse"
            },
            "example": {
              "meta": {
                "request_id": "BXaEFVtjc7TXaJxgZhmFgSUD9edqq_CN"
              },
              "error": {
                "code": "UNAUTHORIZED",
                "message": "Authentication is required."
              }
            }
          }
        }
      },
      "PermissionDenied": {
        "description": "Permission denied",
        "headers": {
          "X-RateLimit-Limit": {
            "$ref": "#/components/headers/X-RateLimit-Limit"
          },
          "X-RateLimit-Remaining": {
            "$ref": "#/components/headers/X-RateLimit-Remaining"
          },
          "Access-Control-Allow-Origin": {
            "$ref": "#/components/headers/Access-Control-Allow-Origin"
          }
        },
        "content": {
          "application/json": {
            "schema": {
              "$ref": "#/components/schemas/ErrorResponse"
            },
            "example": {
              "meta": {
                "request_id": "BXaEFVtjc7TXaJxgZhmFgSUD9edqq_CN"
              },
              "error": {
                "code": "PERMISSION_ERROR",
                "message": "You do not have permission to perform this action."
              }
            }
          }
        }
      },
      "NotFound": {
        "description": "Resource not found",
        "headers": {
          "X-RateLimit-Limit": {
            "$ref": "#/components/headers/X-RateLimit-Limit"
          },
          "X-RateLimit-Remaining": {
            "$ref": "#/components/headers/X-RateLimit-Remaining"
          },
          "Access-Control-Allow-Origin": {
            "$ref": "#/components/headers/Access-Control-Allow-Origin"
          }
        },
        "content": {
          "application/json": {
            "schema": {
              "$ref": "#/components/schemas/ErrorResponse"
            },
            "example": {
              "meta": {
                "request_id": "BXaEFVtjc7TXaJxgZhmFgSUD9edqq_CN"
              },
              "error": {
                "code": "NOT_FOUND",
                "message": "The requested resource was not found."
              }
            }
          }
        }
      },
      "TooManyRequests": {
        "description": "Too Many Requests",
        "headers": {
          "X-RateLimit-Limit": {
            "$ref": "#/components/headers/X-RateLimit-Limit"
          },
          "X-RateLimit-Remaining": {
            "$ref": "#/components/headers/X-RateLimit-Remaining"
          },
          "Retry-After": {
            "$ref": "#/components/headers/Retry-After"
          },
          "Access-Control-Allow-Origin": {
            "$ref": "#/components/headers/Access-Control-Allow-Origin"
          }
        },
        "content": {
          "application/json": {
            "schema": {
              "$ref": "#/components/schemas/ErrorResponse"
            },
            "example": {
              "meta": {
                "request_id": "BXaEFVtjc7TXaJxgZhmFgSUD9edqq_CN"
              },
              "error": {
                "code": "TOO_MANY_REQUESTS",
                "message": "Rate limit exceeded. Retry later."
              }
            }
          }
        }
      },
      "InternalServerError": {
        "description": "Internal server error",
        "headers": {
          "Access-Control-Allow-Origin": {
            "$ref": "#/components/headers/Access-Control-Allow-Origin"
          }
        },
        "content": {
          "application/json": {
            "schema": {
              "$ref": "#/components/schemas/ErrorResponse"
            },
            "example": {
              "meta": {
                "request_id": "BXaEFVtjc7TXaJxgZhmFgSUD9edqq_CN"
              },
              "error": {
                "code": "INTERNAL_SERVER_ERROR",
                "message": "An unexpected error occurred."
              }
            }
          }
        }
      }
    },
    "securitySchemes": {
      "ApiKeyAuth": {
        "type": "http",
        "scheme": "bearer",
        "bearerFormat": "API_KEY",
        "description": "API key authentication. Create API keys in the Supermetrics Hub and send\nthem in the Authorization header:\n`Authorization: Bearer <your-api-key>`\n"
      }
    },
    "headers": {
      "X-RateLimit-Limit": {
        "description": "Request limit per hour",
        "schema": {
          "type": "integer",
          "format": "int32",
          "minimum": 1,
          "maximum": 10000,
          "example": 5000
        }
      },
      "X-RateLimit-Remaining": {
        "description": "Remaining requests in current window",
        "schema": {
          "type": "integer",
          "format": "int32",
          "minimum": 0,
          "maximum": 10000,
          "example": 4999
        }
      },
      "Access-Control-Allow-Origin": {
        "description": "CORS header",
        "schema": {
          "type": "string",
          "maxLength": 255,
          "enum": [
            "*"
          ],
          "example": "*"
        }
      },
      "WWW-Authenticate": {
        "description": "Bearer token required",
        "schema": {
          "type": "string",
          "maxLength": 255,
          "pattern": "^Bearer.*"
        }
      },
      "Retry-After": {
        "description": "Seconds until rate limit resets",
        "schema": {
          "type": "integer",
          "format": "int32",
          "minimum": 1,
          "maximum": 86400,
          "example": 3600
        }
      }
    },
    "schemas": {
      "ErrorResponse": {
        "type": "object",
        "description": "Standard envelope returned by all error (4xx/5xx) responses.",
        "properties": {
          "meta": {
            "$ref": "#/components/schemas/Meta"
          },
          "error": {
            "$ref": "#/components/schemas/Error"
          }
        },
        "required": [
          "meta",
          "error"
        ],
        "additionalProperties": false
      },
      "Meta": {
        "type": "object",
        "description": "Metadata included in every API response.",
        "properties": {
          "request_id": {
            "$ref": "#/components/schemas/RequestId"
          }
        },
        "required": [
          "request_id"
        ],
        "additionalProperties": false
      },
      "Error": {
        "type": "object",
        "description": "Machine- and human-readable detail for a failed request.",
        "properties": {
          "code": {
            "type": "string",
            "pattern": "^[A-Z][A-Z0-9_]*$",
            "maxLength": 100,
            "description": "Stable, screaming-snake-case identifier for the error condition. Clients should branch on this, not on `message`. Common values include BAD_REQUEST, UNAUTHORIZED, FORBIDDEN, NOT_FOUND, CONFLICT_ERROR, PERMISSION_ERROR, UNPROCESSABLE_ENTITY, UNPROCESSABLE_CONTENT, TOO_MANY_REQUESTS, INTERNAL_SERVER_ERROR, DUPLICATION_FAILED, SERVICE_UNAVAILABLE; domains may define additional codes.",
            "example": "BAD_REQUEST"
          },
          "message": {
            "type": "string",
            "maxLength": 255,
            "pattern": "^.+$",
            "description": "Short, human-readable summary of the error.",
            "example": "The request was invalid."
          },
          "description": {
            "type": "string",
            "maxLength": 2048,
            "description": "Optional longer explanation specific to this occurrence.",
            "example": "The field 'display_name' must not be empty."
          }
        },
        "required": [
          "code",
          "message"
        ],
        "additionalProperties": false
      },
      "RequestId": {
        "type": "string",
        "description": "Unique identifier for the request, for tracking and debugging.",
        "pattern": "^[A-Za-z0-9_-]+$",
        "minLength": 8,
        "maxLength": 64,
        "example": "BXaEFVtjc7TXaJxgZhmFgSUD9edqq_CN",
        "x-faker": {
          "random.alphaNumeric": 30
        }
      }
    }
  }
}
````