Postman to AI Core Access Denied

I have set up the ai-sap-sdk several times and each time, my application fails to communicate with the API.
I have my service key, which is shown below.

Now, I am simply trying to use Postman, and I am still failing with Access Denied errors.

Is anyone aware of any tips that I need to know to make this work properly? If I can create the core and open launchpad, and assign the core the service key information from BTP Cockpit, then I should be able to use the sdk? Is there some kind of enable switch or authorization that I may need to complete the setup so I can access the sdk?

Postman Post: {{apiurl}}/v2/admin/resourceGroups
Body:

{

“resourceGroupId”: “rds-ai-core-training-rg”

}

Response:

RBAC: access denied

Thank you for your time. It is very much appreciated.

Regards,
Robert Schmidt

{
“serviceurls”: {
“AI_API_URL”: “https://api.ai.prod.eu-central-1.aws.ml.hana.ondemand.com“
},
“appname”: “ecdce321-7ace-44ad-9d4c-8826682d79db!b148595|aicore!b540”,
“clientid”: “sb—-40”,
“clientsecret”: “cb—KA=”,
“identityzone”: “hackxperience-analytics-insight”,
“identityzoneid”: “6b39d—–f9a”,
“url”: “https://hackxperience-xxx.hana.ondemand.com“
}