You need to keep the Select argument with the required columns, set IncludeHeader = FALSE, and then add a new row before the GI function with the manually added headers.
Hallo Yes the explanation is correct the issue is that the Velixo GI does not accept the Acumatica Caption value. Hence I am unable to use the values in the columns
The select argument does not allow spaces, so in your attachment, for the caption “Shipping Invoice Date”, the formula requires you input this as “ShippingInvoiceDate”.