Need help to create python script to delete Thin AP

I've tried to create a python script to delete a thin AP using SWQL/SWIS.

From my script:

query = "SELECT TOP 5\
IPAddress,Name,\
ControllerName,\
DisplayName,\
Uri\
FROM Orion.Packages.Wireless.AccessPoints\
WHERE IPAddress = '"+thinap_ip+"' and Name = '"+thinap_name+"'"

results = swis.query(query)

for row in results['results']:
   print("{IPAddress} {Name} {ControllerName} {DisplayName} {Uri}".format(**row))
   input("Delete AP Press Enter to continue...")

for row in results['results']:
   swis.delete(row['Uri'])

I'm finding the AP just fine but when it tries to delete it, I get the following error:

10.47.159.99 013-1CO-ADM-119 VAVAB01A.CTRL01 013-1CO-ADM-119 swis://USASHSLW01.LYV.LiveNation.com/Orion/Orion.Nodes/NodeID=1919/AccessPoints/ID=326993

Delete AP Press Enter to continue...

Traceback (most recent call last):

  File "Delete Thin AP.py", line 47, in <module>

    main()

  File "Delete Thin AP.py", line 43, in main

    swis.delete(row['Uri'])

  File "/Users/brian.booher/Library/Python/3.8/lib/python/site-packages/orionsdk/swisclient.py", line 49, in delete

    self._req("DELETE", uri)

  File "/Users/brian.booher/Library/Python/3.8/lib/python/site-packages/orionsdk/swisclient.py", line 63, in _req

    resp.raise_for_status()

  File "/Users/brian.booher/Library/Python/3.8/lib/python/site-packages/requests/models.py", line 960, in raise_for_status

    raise HTTPError(http_error_msg, response=self)

requests.exceptions.HTTPError: 400 Client Error: Invalid key properties specified for entity Orion.Packages.Wireless.AccessPoints.

Parameter name: filter for url: overwatch.lyv.livenation.com:17778/.../ID=326993

I've used a similar construct to delete interfaces.

Any ideas on why this isn't working?