I have a site collection with a lot of subsites attached to projects (each subsite is a site created by a project). Those subsites has a list with its fields.

I executed a PowerShell script that excluded some columns of this list and I want to recover this columns to get the data back or perhaps a way to get this data that was lost in the execution of the script. I used to following code inside a loop:

if($  fields[$  index].CanBeDeleted) {     $  fields[$  index].DeleteObject()     $  clientContext.ExecuteQuery() } 

If there is no way to recover the field, someone has some idea how can I get the data of the excluded columns back or any other solution? Maybe a way to do some restore of data(subsite) in another URL to not overwrite the actual site?

Someone has an idea how can i solve this?

PS: I am using SharePoint Online. I have no access to the server.