你能不能试试这个

https://sharepoint.stackexchange.com/questions/148138/cannot-complete-this-action-please-try-again-sharepoint-2013

I have a list which was created by importing from spreadsheet, in this list there is a column (organization) that is being referenced in another list.

There are couple of items in this list that I am trying to delete but I get this message every time:

"Error

Cannot complete this action.
Please try again."

I have checked the items I am trying to delete and those are not being referenced anywhere. I have full control on this list but still not able to delete these items.I have also tried powershell, content management tool for this.

Can you try this below

https://sharepoint.stackexchange.com/questions/148138/cannot-complete-this-action-please-try-again-sharepoint-2013