Great! That was it!! Thanks @CBurkhead For my GET I was using the header: headers = {"X-Cisco-Meraki-API-Key":"<my-API-Key>","Accept":"application/json"} And I was trying to use the same header for the PUT operation. I was getting code 200 as you well mentioned, however, nothing ever changed. Then, I followed your suggestion and changed my PUT header to: headers = {"X-Cisco-Meraki-API-Key":"<my-API-Key>","Content-Type":"application/json"} And that did it! Thank y'all for the quick response to this thread. I imagined it would take me weeks to get a response. I'm so happy it was not the case. Kudos! ... View more