SharePoint Remote Connector 25.4
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# Construct XML to Update Access Control Lists

To update the Access Control Lists of items in SharePoint, you must construct some XML that specifies the identifiers of the items to update, and provides information about how to change the ACL.

    <identifiersXML>
       <identifier value="...">
         <acl_update>
           ...
         </acl_update>
       </identifier>
     </identifiersXML>

In the identifier `value` attribute, replace "..." with the document identifier of the item that you want to update. A document identifier can be found in the `AUTN_IDENTIFIER` field of an indexed document.

You can update the ACLs of several items by including more than one `identifier` element in your XML:

    <identifiersXML>
       <identifier value="...">
          <acl_update>
             ...
          </acl_update>
       </identifier>
       <identifier value="...">
          <acl_update>
             ...
          </acl_update>
       </identifier>
    </identifiersXML>

The following table describes the XML elements that you can use in the `acl_update` element to specify how to change the ACL:

XML Element | Description | Permitted Occurrences
--- | --- | ---
`<break_inheritance/>` | Add this element to your XML to prevent permissions being inherited from the parent object in SharePoint. If specified, this element must be the first child of `acl_update`. | 0 or 1
`<enable_inheritance revert_acl="true" />` | Add this element to your XML to inherit ACL settings from the parent object in SharePoint. If specified, this element must be the first child of `acl_update`. The attribute `revert_acl` must be specified and must be `true`. SharePoint does not support both inherited and unique permissions on a single item. For example: `<enable_inheritance revert_acl="true" />` | 0 or 1
`<ace action="...">` | Add or remove an entry from the ACL. The `action` attribute must be specified and accepts the value `add` or `remove`. The following child elements must all appear exactly once: `principal` - the user or group whose permissions you want to modify in the ACL. You can specify a domain user name, an SID, a SharePoint group name, or a claim. `principalType` - the type of principal specified by the `principal` element `DomainUser` - a domain user, for example `DOMAIN\USER` `SID` - an SID, for example `S-1-1-0` `SharepointGroup` - a SharePoint group `Claim` - a claim `level` - a comma-separated list of permissions to add or remove. You can specify any permissions that are defined on the SharePoint site. For a list of possible permissions go the page `https://mySharePointSite/_layouts/role.aspx`, where `mySharePointSite` is the URL of a SharePoint site. | 0 or more

The following example demonstrates how to change the ACL for an item in SharePoint:

- grant read permission to `MYDOMAIN\user1`
- grant read and contribute permissions to `MYDOMAIN\user2`
- remove full control permission from `MYDOMAIN\user3`

    <identifiersXML>
       <identifier value="...">
         <acl_update>
           <break_inheritance/>
           <ace action="add">
             <principal>MYDOMAIN\user1</principal>
             <principalType>DomainUser</principalType>
             <level>Read</level>
           </ace>
           <ace action="add">
             <principal>MYDOMAIN\user2</principal>
             <principalType>DomainUser</principalType>
             <level>Read, Contribute</level>
           </ace>
           <ace action="remove">
             <principal>MYDOMAIN\user3</principal>
             <principalType>DomainUser</principalType>
             <level>Full Control</level>
           </ace>
         </acl_update>
       </identifier>
     </identifiersXML>

The following example demonstrates how to change the ACL for an item, so that ACL entries are inherited from the parent object in SharePoint and all non-inherited entries are removed:

    <identifiersXML>
       <identifier value="...">
         <acl_update>
           <enable_inheritance revert_acl="true"/>
         </acl_update>
       </identifier>
     </identifiersXML>

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Version 25.4 | Last updated October 2025

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Product: Knowledge Discovery SharePoint Remote Connector 25.4

Topic Title: Construct XML to Update Access Control Lists