How to add productline for new invoice in crm with mailparser

How to add productline for new invoice in crm with mailparser

I use mailparser and want to create new invoices in crm from a .csv file.
The file contents Clientname, date, product etc.
How i can add or select by Api a product line item from the popupscreen?

When i use prod-description or prod-code i get:

API Response body
{"data":[{"code":"INVALID_DATA","details":{"expected_data_type":"jsonarray","api_name":"Product_Details"},"message":"invalid data","status":"error"}]}

Where to start, need help.