About Amazon Ads API v1： /adsApi/v1/create/campaigns

[CoderWeiAden]

Dear developer friends,

I am calling the campaign creation API with the following request payload:

{
    "campaigns": [
        {
            "adProduct": "SPONSORED_PRODUCTS",
            "autoCreationSettings": {
                "autoCreateTargets": false,
                "autoManageCampaign": true
            },
            "budgets": [
                {
                    "budgetType": "MONETARY",
                    "budgetValue": {
                        "monetaryBudgetValue": {
                            "marketplaceSettings": [
                                {
                                    "marketplace": "US",
                                    "monetaryBudget": {
                                        "value": 1.0
                                    }
                                }
                            ],
                            "monetaryBudget": {
                                "value": 1.0
                            }
                        }
                    },
                    "recurrenceTimePeriod": "DAILY"
                }
            ],
            "endDateTime": "2030-01-01T23:59:59Z",
            "marketplaceScope": "SINGLE_MARKETPLACE",
            "marketplaces": [
                "US"
            ],
            "name": "campaign_name_2026_1",
            "startDateTime": "2030-01-01T00:00:00Z",
            "state": "PAUSED"
        }
    ]
}

However, the API response is:

{
    "error": [
        {
            "errors": [
                {
                    "code": "ACTION_NOT_SUPPORTED",
                    "message": "Operation not allowed"
                }
            ],
            "index": 0
        }
    ],
    "partialSuccess": [],
    "success": []
}

Could you please clarify why this request results in an ACTION_NOT_SUPPORTED error?
Is there any specific requirement or restriction related to the autoCreationSettings, budget structure, or marketplace configuration that might cause this issue?
I noticed that this API has indeed been released, why is it still reporting this error?
Looking forward to your answer. Thank you very much