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

# Publish a segment plan

> Publishes a segment plan by ID, making it the live published version and assigning a segment term id. There is no request body - publishing acts on the plan already saved by <code>create</code>/<code>update</code>. The plan is fully validated on publish (drafts may save with invalid criteria, but publish rejects them). Returns the published plan's metadata (without node detail).

## OpenAPI

````json POST /segmentation/publish
{
  "openapi": "3.0.4",
  "info": {
    "title": "Engage public API",
    "version": "1"
  },
  "servers": [
    {
      "url": "https://your-engage-domain.com/api/rest"
    }
  ],
  "tags": [
    {
      "name": "Address Attributes"
    },
    {
      "name": "Async"
    },
    {
      "name": "Audit Log"
    },
    {
      "name": "Automation"
    },
    {
      "name": "Blacklist"
    },
    {
      "name": "CMS"
    },
    {
      "name": "Contact"
    },
    {
      "name": "Content"
    },
    {
      "name": "Coupon"
    },
    {
      "name": "Draft Message"
    },
    {
      "name": "Ecommerce"
    },
    {
      "name": "Group"
    },
    {
      "name": "Group Attributes"
    },
    {
      "name": "Landing Page"
    },
    {
      "name": "Member Attributes"
    },
    {
      "name": "Membership"
    },
    {
      "name": "Message"
    },
    {
      "name": "Meta"
    },
    {
      "name": "Mobile Push"
    },
    {
      "name": "Prepared Message"
    },
    {
      "name": "Process"
    },
    {
      "name": "Profile Attributes"
    },
    {
      "name": "Related Data"
    },
    {
      "name": "Segmentation"
    },
    {
      "name": "System"
    },
    {
      "name": "System User"
    },
    {
      "name": "Usage Statistics"
    },
    {
      "name": "User"
    },
    {
      "name": "Whiteboard"
    }
  ],
  "paths": {
    "/segmentation/publish": {
      "post": {
        "tags": [
          "Segmentation"
        ],
        "summary": "Publish a segment plan",
        "description": "Publishes a segment plan by ID, making it the live published version and assigning a segment term id. There is no request body - publishing acts on the plan already saved by <code>create</code>/<code>update</code>. The plan is fully validated on publish (drafts may save with invalid criteria, but publish rejects them). Returns the published plan's metadata (without node detail).",
        "operationId": "publish",
        "parameters": [
          {
            "name": "id",
            "in": "query",
            "description": "ID of the plan to publish (GUID).",
            "required": true,
            "schema": {
              "type": "string"
            }
          },
          {
            "name": "isBeta",
            "in": "query",
            "description": "Use the beta calculation path. Defaults to false.",
            "schema": {
              "type": "boolean"
            }
          },
          {
            "name": "fastCountMode",
            "in": "query",
            "description": "Fast-count mode. Defaults to 'off'.",
            "schema": {
              "type": "string"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "The published plan's metadata (without node detail).",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/SegmentationInfo"
                }
              }
            }
          },
          "400": {
            "description": "bad request",
            "content": {
              "application/json": {}
            }
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "SegmentationInfo": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string"
          },
          "name": {
            "type": "string"
          },
          "status": {
            "type": "string"
          },
          "timeZone": {
            "$ref": "#/components/schemas/TimeZoneReference"
          },
          "selectionTermId": {
            "type": "integer",
            "format": "int64"
          },
          "labels": {
            "type": "array",
            "items": {
              "type": "string"
            }
          },
          "createdBy": {
            "$ref": "#/components/schemas/UserReference"
          },
          "createdOn": {
            "type": "string"
          },
          "publishedBy": {
            "$ref": "#/components/schemas/UserReference"
          },
          "publishedOn": {
            "type": "string"
          },
          "updatedBy": {
            "$ref": "#/components/schemas/UserReference"
          },
          "updatedOn": {
            "type": "string"
          }
        }
      },
      "TimeZoneReference": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string"
          }
        }
      },
      "UserReference": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string"
          },
          "name": {
            "type": "string"
          },
          "firstName": {
            "type": "string"
          },
          "lastName": {
            "type": "string"
          },
          "email": {
            "type": "string"
          }
        }
      }
    }
  }
}
````