# Calculate the impact of changes to an entity definition

Submits a modified version of an entity definition and returns an analysis of the impact those changes would have compared to the current definition. Used to preview the effects of schema changes before applying them.

Endpoint: POST /api/entitydefinitions/{name}/impact
Version: v1.0
Security: OAuth2.0

## Security:

  - `OAuth2.0` (unknown)
    oauth2

## Path parameters:

  - `name` (string, required)
    The name of the entity definition to analyze, for example, `M.Asset`.

## Request body:

  - `application/json-patch+json, application/json, text/json, application/*+json` (unknown)
    The updated details of the entity definition to compare against the original, for example, an instance of Stylelabs.M.Base.Web.Api.Models.EntityDefinitionResource containing the proposed changes.

## Request fields (application/json-patch+json):

  - `id` (integer)

  - `name` (string)

  - `modified_on` (string)

  - `created_on` (string)

  - `display_template` (string)

  - `is_taxonomy_item_definition` (boolean)

  - `is_path_enabled_definition` (boolean)

  - `is_manual_sorting_allowed` (boolean)

  - `is_system_owned` (boolean)

  - `is_built_in` (boolean)

  - `labels` (object)

  - `member_groups` (array)

  - `member_groups.name` (string)

  - `member_groups.content_group` (string)

  - `member_groups.labels` (object)

  - `member_groups.members` (array)

  - `member_groups.members.name` (string)

  - `member_groups.members.labels` (object)

  - `member_groups.members.helptext` (object)

  - `member_groups.members.is_conditional` (boolean)

  - `member_groups.members.conditions` (array)

  - `member_groups.members.conditions.member` (string)

  - `member_groups.members.can_trigger_conditional_members` (boolean)

  - `member_groups.members.is_system_owned` (boolean)

  - `member_groups.members.is_secured` (boolean)

  - `member_groups.members.can_write` (boolean)

  - `member_groups.members.allow_updates` (boolean)

  - `member_groups.is_system_owned` (boolean)

  - `member_groups.is_conditional` (boolean)

  - `member_groups.conditions` (array)

  - `member_groups.is_secured` (boolean)

  - `member_groups.can_write` (boolean)

  - `entities` (object)
    Represents a link to a resource.

  - `entities.href` (string)
    Gets or sets the URI that points to the resource this link refers to.

  - `entities.filename_properties` (array)
    Gets or sets the URI that points to the resource this link refers to.

  - `entities.title` (string)
    Gets or sets the title that describes this link.

  - `entities.templated` (boolean)
    Gets or sets a value indicating whether the contained URI is a template.

  - `permissions` (array)
    All available permissions for the entity definition

## Response 200:

  - `200` (unknown)
    The impact analysis was successfully calculated and returned

## Response 400:

  - `400` (unknown)
    The request is invalid (for example, the resource is null or contains invalid data)

## Response 401:

  - `401` (unknown)
    Unauthorized request or invalid access token

## Response 404:

  - `404` (unknown)
    The entity definition with the specified name was not found