Problem using Import Excel to Database smart service

Hi, everyone! I need to import a spreadsheet data into a database table and I'm using Import Excel to Database smart service for that matter with parameters described below:

• Batch Size = 1000;
• Data Source Name = "jdbc/Appian";
• Database Field Names = {  "EQUIPMENT_NO",  "MATERIAL_TOT",  "SUPERIOR_EQUIPMENT_NO",  "SUPERIOR_TECH_ID",  "CALCULATED_ACTIVITY",  "NEXT_LEAK_TEST_DATE",  "HAL_SERIAL_NO",  "ISOTOPE",  "SORT_FIELD",  "AMI_DOCUMENT_NO"};
• Excel Document = pv!sapInventory;
• Excel Header Names = {  "Equipment",  "Material/TOT",  "Superord. Equipment",  "Superior TechID",  "Calculated Activity",  "Next Leak Test Required Date",  "Halliburton Serial No.",  "Isotope",  "Sort field",  "AMI Document Number"};
• New Columns ={  "QCA_ID",  "IS_ACTIVE",  "CREATED_BY",  "CREATED_ON"};
• New Columns Values ={  tostring(pv!qcaId),  if(true(), "1", "0"),  user(loggedInUser(), "username"),  now()};
• Number of Columns to Read in Row = 35;
• Sheet Number = 0;
• Table ="QCA_SAP_EQUIPMENT_INVENTORY_LIST"

So basically excel header names I got from a document are in respective order as database field names. Also there are other database columns which I'm populating with other data than spreadsheet. The problem is that a smart service returns Error Occured = true, but no Error Txt. So I can't localize an issue