Anaplan api get lists issue

[karanAMP]

Hi guys 

Is anyone having issues with retrieving lists end point via api ?

I am getting below error 

https://api.anaplan.com/2/0/workspaces/myworkspaceid/models/mymodelid/lists
{'Authorization': 'AnaplanAuthToken mytokenvalue', 'Accept': 'application/json'}
{
"status": {
"code": 404,
"message": "Not Found"
},
"path": "/2/0/workspaces/myworkspaceid/models/mymodelid/lists",
"timestamp": "2021-07-13T08:32:30.477100Z"

I have checked following 

1. workspace id is correct
2. model id is correct 
3. auth token works ( i have made calls using same token to get list of workspaces and models)

one thing i noticed that on api document retreive request url is HTTP instead of HTTPS . have tried that as well doesnt work 

any idea ?

[karanAMP]

update 

I am workspace admin and can successfully log into model and have full access 

i even tried content_type : application/json instead of accept 

still didn't work 

any help will be greatly appreciated 

[karanAMP]

any help @ben_speight ??? I have hit a brick wall with this 

[ben_speight]

Normally that response would suggest incorrect workspace ID, incorrect model ID, unsupported API version or no access to that model. I presume you cannot access other resources below model level eg files?

[karanAMP]

@ben_speight  yes i cannot access anything below model level via API

The odd thing is I have full access (workspace admin) to the model and can access everything ???