Re: getNetworkPiiPiiKeys - 400 Bad Request, {'errors': ['Please provide exactly one of username, email, mac, serial, imei, bluetoothMac']}
This error message seems clear and actionable, so please let us know if following the error message's guidance doesn't work. I see that the descriptions of the query parameters do not explain that one of them is needed. The individual query params cannot be marked required, because not all of them are required (OASv3 is quite binary in that way). One way for this to be handled is for Meraki to update the description of the operation to include this guidance. Please work with Meraki Support to open a documentation fix case, so the relevant team can update the documentation to explain the necessary inputs.