Trados Cloud API - Machine Translation - target segments empty

Hello,

Machine Translation output is not added in the target language segments using Trados Cloud API.

The project is created with success, no error. The machine translation step runs. But when we open the Project online, the machine translation output is not inserted in the target language segments.The target segments stay empty (or source is copied into the target).

The translation engine (DeepL)  is well defined in the template and the machine translation step in the workflow too.

Also, when creating the project online without API, the machine translation outpout is well inserted in the target segment.

Could you please help us here? 

Thank you in advance.

Best,

Brigitte

{
      "id":"6830623d4674622f6fdce787",
      "status":"skipped",
      "taskType":
      {
        "id":"65008e68af67012db01785a1",
        "key":"apply-machine-translation",
        "name":"Machine Translation",
        "automatic":true,
        "scope":"file"
      },
      "input":
      {
        "type":"targetFile",
        "targetFile":
        {
          "id":"6830623b872f877697949d55",
          "name":"file.docx",
          "languageDirection":
          {
            "sourceLanguage":
            {
              "languageCode":"en-GB",
              "englishName":"English (United Kingdom)"
            },
            "targetLanguage":
            {
              "languageCode":"fr-FR",
              "englishName":"French (France)"
            },
            "id":"683062306462aa45c4d61d20"
          }
        }
      },
      "inputFiles":
      [

      ],
      "assignees":
      [

      ],
      "createdAt":"2025-05-23T11:55:40.874Z",
      "failedTask":
      {
        "errors":
        [
          {
            "name":"engineId",
            "code":"empty",
            "value":"en_fr_NEURAL_True"
          }
        ]
      }
    }