Set single item permissions using skybow Triggered Actions

If you need to set unique permissions on a single list item or document in a SharePoint list, you can do that using a skybow Triggered Action.

Configure the following steps to set them dynamically via the SharePoint REST API:

1. Login to skybow Solution Studio https://solutions.skybow.com
2. Create a new solution or open your existing solution
3. Click on the list in the left tree (Solution Elements) -> Things in background -> Triggered Actions
   
   
   
4. Add a new triggered action, give it an appropriate title and click next
5. Choose your trigger e.g. Item Added and click next
6. Choose the action type HTTP Request and configure the first action to remove all the permissions from the newly created item
   Type: HTTP Request
   Url: [[@Web.Url]]/_api/lists/getByTitle('My List')/items([[ID]])/breakroleinheritance(copyRoleAssignments=false,clearSubscopes=true)
   Request Type: POST
   Headers: Accept              application/json;odata=nometadata
   
   
   
7. Add another action of type HTTP Request to add e.g. contribute permissions to the author
   Type: HTTP Request
   Url: [[@Web.Url]]/_api/lists/getByTitle('My List')/items([[ID]])/roleassignments/addroleassignment(principalid='[[Author.Id]]',roleDefId=1073741827)
   Request Type: POST
   Headers: Accept              application/json;odata=nometadata
   
   Hint: You can find a list of standard Role Definition IDs here: (those are everywhere the same, on SharePoint Server but also on SharePoint Online)
   https://www.c-sharpcorner.com/article/get-sharepoint-role-definition-ids/ 
   
   
8. Save it and add a new item to the list to test it
   Note that it will take a couple of seconds for the permissions to be applied, as skybow Triggered Actions are executed asynchronously in the background.

Warning: Be aware that too many permission breaks can dramatically slow down the performance of your SharePoint Site. Please stick to the official SharePoint limits by Microsoft.