---
schema_version: "1"
id: 1fa154cc89f78166c85a02eac0b9ae9a9f1952e1c4a2ea73da6ce1fff6356fa5
title: Knowledge Blocks Limitations and Considerations
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/service/264-0-0/knowledge_blocks_considerations.md
canonical_url: https://help.salesforce.com/s/articleView?id=service.knowledge_blocks_considerations.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: 5461bbdffdc8891b1a4ebd8e12d8f7441cc6002f8f2ca00a81f403da90d4a343
description: Before you start using Knowledge Blocks, review its limitations and considerations.
products:
  - Service Cloud
release: "264"
---
# Knowledge Blocks Limitations and Considerations

Before you start using Knowledge Blocks, review its limitations and considerations.

### Required Editions

<table class="slds-table slds-table_bordered slds-max-medium-table_stacked slds-m-bottom_small edition"><colgroup><col></colgroup><tbody><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Available in Lightning Experience. <a href="https://help.salesforce.com/s/articleView?id=service.service_editions_reference.htm&amp;language=en_US" target="_blank">View supported editions</a>.</td></tr></tbody></table>

- **Knowledge Block content has a limit of 32,000 characters.** A Knowledge Block can contain up to 32,000 characters. An article Rich Text Area field can contain up to 131,072 characters.
- **Delete only unused draft or unused archived block versions.** You can delete a block version only when it’s a draft or archived version and no draft or published article uses it.
- **To delete a knowledge block, delete all versions first.** You can’t delete a knowledge block while it still has versions. If draft or published articles use the block, remove those references, delete the versions, and then delete the block.
- **Restored article drafts exclude deleted block content.** If you restore an archived article that uses a deleted knowledge block version, the restored draft doesn’t include that block’s content.
- **Finish one knowledge block update before you start another.** When you update a knowledge block, wait until all articles that use it are updated before you update another knowledge block. If you update several knowledge blocks without waiting, some article updates can fail.
- **Publishing several block versions at the same time can cause article updates to skip or fail.** If an article uses more than one of those blocks, auto-update and auto-publish can conflict on that article. The Article Update Status related list can show:
    - **Skipped.** Another block’s update changed or archived the article.
    - **Failed.** Two updates reached the same article draft at the same time. Try again to update the articles.
    - **Publish Failed.** The draft was updated, but auto-publish didn’t finish. Publish the article manually.
- **Translate Knowledge Blocks for use in another language.** To insert a knowledge block into an article in another language, translate the block into that language first.
- **Publish the default-language version before you publish block versions in other languages.** You can’t publish a block version in another language until you publish the default-language version. Knowledge Blocks don’t support auto-translation, so translate those versions manually.