There are some site columns create in our sharepoint online site which were created using the client side object model (csom) with the "Sealed" property set to True.
I now want to delete these columns, but I am unable to do so using the csom as a result of the column being sealed.
I have tried to update the field to set the Sealed property to false on the site column, but get an error, and looking at the definition of the property (msdn.microsoft.com/.../microsoft.sharepoint.client.field.sealed.aspx), it appears to be read only.
Can anyone tell me how to update the sealed property of a site column in sharepoint online using the client side object model?
Thanks in advance for any assistance!