409 conflict creating block


Hi! I'm having an issue creating a certain block of mine. It occurs both in production and in development and also running version 10 and the latest version.

When creating the block I get an error in my browser console stating a 409 conflict error. It happens approx 80 % of the times trying to create the block.

  1. Request URL: http://mydomain/EPiServer/cms/Stores/contentdata/
  2. Request Method: POST
  3. Status Code: 409 Conflict

The request payload:

  "name": "New Blockaaaa",
  "parentLink": "5_76891",
  "contentTypeId": 46,
  "properties": {
    "icategorizable_category": [],
    "image": "/link/8690b853be154572967feb02028fef05.aspx",
    "name": "xx",
    "title": "xxxxx",
    "mainBody": "


", "phone": "xxx", "email": "xxxxx" }, "createAsLocalAsset": true, "autoPublish": true }

I can't see anything strange with the block other than that it inherits from another blocktype. But thats alright isn't it?

#186330 Dec 18, 2017 9:11
  • Hovard Berg
    Member since: 2011

    +1. We are experiencing the same issue.

    #186675 Jan 02, 2018 10:59

    Did you solve it? I am experiencing the same issue.

    #191036 Apr 19, 2018 12:02
  • Aniket
    Member since: 2015

    Can you post the code?

    #191092 Apr 19, 2018 23:18

    Please review this knowledge base and let me know if it helps


    #191098 Apr 20, 2018 5:49
  • R M
    Member since: 2014

    I am experiencing the same issue. (Version 10)

    I have reviewed the solution suggested in the link above https://support.episerver.com/hc/en-us/articles/360002910312-409-conflict-Creating-page-block and can confirm this occurs even when with existingResponse attribute is set to

       existingResponse="PassThrough" />

    or it's not added.

    Here are some more details:

    • issue seems to occur for certain blocks only
      • blocks have required properties and non-required properties
      • most properties are culturespecific
    • issue occurs only when user tries to create these blocks from ContentArea
      • issue never occurs when blocks are created on the Assets panel
      • Response is 
        • message: "Unable to load /secui/cms/Stores/contentdata/ status: 409"
        • url:"/secui/cms/Stores/contentdata/"
        • responseText: "The page was not displayed because there was a conflict."
        • status:409
        • statusText:"Conflict"
    #192624 May 21, 2018 18:29

    We had a selection factory which timed out causing a 409. We checked the logging and got an Unexpected error when requesting  model accessor which pointed us to the problem in the stack trace.

    I would check the logs for MetadataStore for any hints of what goes wrong.

    In our case:

    Unexpected error when requesting model accessor for EPiServer.Core.ContentData with parameter {"parentLink":"117","contentTypeId":24} System.Net.WebException: The operation has timed out at Sys (..)
    #194553 Edited, Jun 25, 2018 13:28
  • Alf Nilsson
    Member since: 2008

    If you are using a version earlier than 11.8 this can be caused by a custom validator which fires a validation message, but is not displayed due to bug Bug - CMS-11522 

    Read more on https://world.episerver.com/support/Bug-list/bug/CMS-11522

    #198498 Oct 30, 2018 5:25