The magically descriptive error 401 Forbidden "message": "Access denied on creating field 'uid'.".  You probably can sense the love I have for this error.  This was a painful error that took a little while to resolve.  First off I also had this error display as: "Access denied on creating field 'uid' "Access denied on creating field 'name' "Access denied on creating field 'entity_id' And I would have had more if I continued down the resolution path I was on....

We had an issue recently where saving a page in the admin area produced one of the following outcomes: The page would reload and not save the selections that were made; or Save the page and the input box area would be a white screen and the front end of the site would not be show any more. The page we are referring to holds a matrix of 18,079 input box items.  What how did it get that big?  The page layout is show well organised and visually easy to view that we hadn't assessed...