API calls with parameters

Maybe I’m misunderstanding, but I created an endpoint in our PSU, set to POST, with only the following code:

$Payload = $Body | ConvertFrom-Json -Depth 100

Write-Output $Payload

and then created a new request in Postman , set to POST, with only an Authorization header and Content-Type header, with the Body set to “raw” and JSON, with the following lines:

[
{
        "order_id": 5633,
        "order_status": "approved",
        "order_date": "2025-10-02T14:57:05.456+0500"
},
    {
        "order_id": 62442,
        "order_status": "approved",
        "order_date": "2025-10-02T14:57:05.456+0500"
    }
]

And I can see that I get a code 200 back, with the output of $Payload in my results window in Postman.