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

# Delete Evaluation Pipeline Column

Delete a single column from an evaluation pipeline blueprint. Surrounding columns shift left to fill the gap.

## Behavior Notes

* Dataset columns are protected and cannot be deleted.
* Only blueprint pipeline columns can be deleted; columns on finished batch runs cannot.
* Deleting a column re-queues cells in columns to its right because references may have shifted.

## Related

* [Edit Evaluation Pipeline Column](/reference/edit-report-column)
* [Create Evaluation Pipeline](/reference/create-reports)
* [Node & Column Types](/features/evaluations/column-types)


## OpenAPI

````yaml DELETE /report-columns/{report_column_id}
openapi: 3.1.0
info:
  title: FastAPI
  version: 0.1.0
servers: []
security:
  - ApiKeyAuth: []
paths:
  /report-columns/{report_column_id}:
    delete:
      tags:
        - reports
      summary: Delete Evaluation Pipeline Column
      operationId: deleteReportColumn
      parameters:
        - name: report_column_id
          in: path
          required: true
          schema:
            type: integer
          description: ID of the report column to delete.
      responses:
        '204':
          description: Column deleted. No response body is returned.
        '401':
          $ref: '#/components/responses/UnauthorizedError'
        '403':
          $ref: '#/components/responses/ForbiddenError'
        '404':
          $ref: '#/components/responses/NotFoundError'
        '422':
          $ref: '#/components/responses/ValidationError'
components:
  responses:
    UnauthorizedError:
      description: Unauthorized - missing or invalid API key.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    ForbiddenError:
      description: Forbidden - API key does not have access to the requested resource.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    NotFoundError:
      description: Not found - requested resource does not exist or is not accessible.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    ValidationError:
      description: Validation error - request parameters or body are invalid.
      content:
        application/json:
          schema:
            oneOf:
              - $ref: '#/components/schemas/HTTPValidationError'
              - $ref: '#/components/schemas/ErrorResponse'
  schemas:
    ErrorResponse:
      type: object
      properties:
        success:
          type: boolean
          default: false
          description: Indicates that the request failed.
        message:
          type: string
          description: Human-readable error message.
        error:
          type: string
          description: Machine-readable or fallback error message.
      additionalProperties: true
      description: >-
        Standard error response. Some legacy endpoints may return either message
        or error.
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
    ValidationError:
      properties:
        loc:
          items:
            anyOf:
              - type: string
              - type: integer
          type: array
          title: Location
        msg:
          type: string
          title: Message
        type:
          type: string
          title: Error Type
      type: object
      required:
        - loc
        - msg
        - type
      title: ValidationError
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-API-KEY

````