---
title: "Comments Limitations"
description: "Learn about the limitations of comments in Contentstack: active discussions, max comments, message length, mentions, and export restrictions."
url: "https://www.contentstack.com/docs/headless-cms/comments-limitations"
product: "Contentstack"
doc_type: "guide"
audience:
  - developers
  - admins
version: "current"
last_updated: "2026-06-23"
---

# Comments Limitations

*   You can have **one active discussion** on most fields. However, the JSON Rich Text Editor (RTE) supports multiple active discussions.
*   Each content block, text, or image within the JSON RTE can have **one active discussion**.
*   A maximum of **100 active discussions** are allowed per entry per locale.
*   Each discussion can contain up to **1,000 comments**.
*   The maximum message length allowed for each comment is **500 characters**.
*   You can mention a maximum of **20 users** and **20 roles** in a single comment.
*   You cannot export entry discussions or comments while exporting the entries.
*   You cannot view comments for unlocalized or older entry versions.
*   Comments can only be added to subfields of **Group** and **Global Fields**. Similarly, for **Modular Blocks**, comments can only be added to fields within each block and not to the parent field.