Description

When using SXA delegated area and saving changes in a source item that was cloned, the following error might appear:

An item with the same key has already been added.

Solution

To resolve the issue, consider one of the following options:

• Upgrade Sitecore XP instance to Sitecore XP 10.1.0 or later.
• Download and install the hotfix or a patch compatible with the affected product version:
  
  • For Sitecore XP 9.0.2: https://github.com/sitecoresupport/Sitecore.Support.369243/releases
  • For Sitecore XP 9.2.0 download and install the corresponding cumulative hotfix available at KB1001331