It is possible that a column in the source dataset doesn't have a name (has a blank name). For example:
Integrator handles it by automatically generating a name for the "empty name" column. The new name is generated as
column + column index. For example
If it is a truly an "empty column" - no name and no data, you can easily exclude it in the mapping or by using SQL, like the statements below:
select "Item Code", "Item Description", Group, "Qty On Hand"
If a column has no name but does have data - just use a new auto-generated name, such as