Symptoms
When you preview update set, you see errors like this below
Cannot commit Update Set 'xxxx' because: Update scope id '1167622b01473231007f47563dbb9a71' is different than update set scope id 'global'. Resolve the problem before committing.
Cause
1.The scope of all the updates in the update set has to match the scope of the update set itself.
i.e. All the customer updates have to be in the same scope as the scope of the update set
Example: The update set shown in the screenshot below has customer updates from three different scopes. But the update set was created in Global scope. Any other updates other than the ones from Global scope shouldn't be present
Resolution
All the customer updates have to be in the same scope as the scope of the update set itself.
You may want to remove the customer update entries. After that, if you preview the update set the preview problem will no longer persist.