In Sandbox, API Explorer call getInventoryItems return "Access denied"

[c.aitech]

Hello

When I used API Explorer, call getInventoryItems, retun error below:

{
"errors": [
{
"errorId": 1100,
"domain": "ACCESS",
"category": "REQUEST",
"message": "Access denied",
"longMessage": "Insufficient permissions to fulfill the request."
}
]
}

I read the docs, This method is supported in Sandbox environment and my OAuth Scopes include

https://api.ebay.com/oauth/api_scope/sell.inventory.readonly

https://api.ebay.com/oauth/api_scope/sell.inventory

I missing something?

Best Regasrds