Update from my side: it works now, I made the following modifications: My lines array was incorrect formatted I missed the branch on the line I missed the operation on the line I missed the date on the line I missed the financialperiod on the line The following message was succesfully posted: {
"description": {
"value": "test"
},
"lines": [{
"operation": "Insert",
"branch":{"value":"10"},
"project": { "value": "23.22639" },
"projectTask": { "value": "SA" },
"accountGroup": { "value": "501" },
"date":{"value": "2023-01-15"},
"financialPeriod":{"value": "202301"}
}
]
}
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