Product Offering Post Request error code: 24

[MouadJ]

Hello Everyone,
I've been receiving this error when trying to create a product offering through TMF's Open API. I will include my payload as well below just in case I was passing the wrong JSON body.
if I send the request with an empty array of prodSpecCharValueUse (prodSpecCharValueUse: []), it works just fine. but ofc i get no characterstics with my product offering.

{

    "code": 24,

    "reason": "Invalid characteristic: Either the characteristic is not present in the system or the characteristic does not belong to the specified product specification tree hierarchy",

    "message": "Invalid characteristic: Either the characteristic is not present in the system or the characteristic does not belong to the specified product specification tree hierarchy",

    "details": [

        {

            "message": "Invalid characteristic: Either the characteristic is not present in the system or the characteristic does not belong to the specified product specification tree hierarchy",

            "datapath": "prodSpecCharValueUse[0]"

        }

    ]

}

{

    "name": "product offering for testing",

    "displayName": "product offering for testing",

    "description": "etst",

    "lifecycleStatus": "Draft",

    "validFor": {

        "startDateTime": "2025-07-07",

        "endDateTime": ""

    },

    "productOfferingTerm": "not_applicable",

    "productOfferingPrice": [

        {

            "priceType": "recurring",

            "price": {

                "taxIncludedAmount": {

                    "unit": "USD",

                    "value": 10

                }

            }

        },

        {

            "priceType": "nonRecurring",

            "price": {

                "taxIncludedAmount": {

                    "unit": "USD",

                    "value": 0

                }

            }

        }

    ],

    "productOfferingCharacteristic": "",

    "bundledProductOffering": [],

    "bundledGroupProductOffering": [],

    "productSpecification": {

        "id": "686bb642021bcdeb5d90ccd0",

        "name": "Business Internet Pro"

    },

    "prodSpecCharValueUse": [

        {

            "id": "65229978c3a66210255c5b2ed4013103",

            "name": "Speed",

            "description": "Script automation",

            "valueType": "choice",

            "validFor": {

                "startDatetime": "2025-07-02 16:21:44"

            },

            "productSpecCharacteristicValue": [

                {

                    "value": "500Mbps",

                    "validFor": {

                        "startDateTime": ""

                    },

                    "isDefault": false,

                    "isMandatory": false

                }

            ],

            "productSpecification": {

                "id": "686bb642021bcdeb5d90ccd0",

                "name": "Business Internet Pro",

                "version": "",

                "internalVersion": "1",

                "internalId": "e922d138c3a66210255c5b2ed401319a"

            }

        }

    ],

    "channel": {

      "id": "e561aae4c3e710105252716b7d40dd8f",

      "name": "Web"

    },

    "category": [{

    "id": "f4bb1d52c3622210255c5b2ed40131ac"

    }],

    "status": "draft"

}