I am able to generate the report using an excel recipe but when trying to get it to download using API, reports get downloaded without data, missing data.
Below is the request body for api call

{
"template": {
"name": "test excel"

},
"data": {
    "selectedElement": "0/83159",
    "mapParams": {
        "contract": "0_14/35510",
        "dateDebut": "11/01/2021",
        "dateFin": "17/01/2021"
    }
},
"options": {
    "reports": {
        "async": true
    },
    "reportName": "myreport.xlsx"
}

}