> ## 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.

# Validate many messages

> Validates many messages for the following functionality: checks that the message is valid (InvalidObjectError -> objecttype message), checks that the message does not contain any invalid content store items, checks that the message does not use archived Attributes (InvalidObjectError -> objecttype attribute).<br>Request body example:<br><br><pre>["1800249570","1800202306"]</pre>

## OpenAPI

````json POST /message/validateMany
{
  "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": {
    "/message/validateMany": {
      "post": {
        "tags": [
          "Message"
        ],
        "summary": "Validate many messages",
        "description": "Validates many messages for the following functionality: checks that the message is valid (InvalidObjectError -> objecttype message), checks that the message does not contain any invalid content store items, checks that the message does not use archived Attributes (InvalidObjectError -> objecttype attribute).<br>Request body example:<br><br><pre>[\"1800249570\",\"1800202306\"]</pre>",
        "operationId": "validateMany",
        "requestBody": {
          "content": {
            "application/json": {
              "schema": {
                "type": "array",
                "items": {
                  "type": "integer",
                  "format": "int64"
                }
              }
            }
          },
          "x-bodyName": "body"
        },
        "responses": {
          "200": {
            "description": "Example response: <br><br>[{<br>    \"entityId\": 1800249570,<br>    \"errorCode\": \"ARCHIVED_ATTRIBUTE\",<br>    \"errorMessage\": \"Message contains archived attribute(s) user.CustomAttribute.Attribute1\"<br>}, {<br>    \"entityId\": 1800202306,<br>    \"errorCode\": null,<br>    \"errorMessage\": null<br>}]",
            "content": {
              "application/octet-stream": {
                "schema": {
                  "$ref": "#/components/schemas/CallResult"
                }
              }
            }
          },
          "400": {
            "description": "Message does not exist, for example:<br><br><pre>{<br>  \"errorActor\": \"CLIENT\",<br>  \"errorCode\": \"NO_SUCH_OBJECT\",<br>  \"message\": \"Message with id=24011454555 does not exist.\",<br>  \"objectType\": \"Message\",<br>  \"propertyName\": \"id\",<br>  \"propertyValue\": \"24011454555\"<br>}</pre>",
            "content": {
              "application/octet-stream": {}
            }
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "CallResult": {
        "type": "object",
        "properties": {
          "entityKey": {
            "type": "string"
          },
          "code": {
            "type": "string"
          },
          "message": {
            "type": "string"
          }
        }
      }
    }
  }
}
````