Forums indicate that when using bulk copy with the SQL Server driver for .NET, the error “Invalid column name ‘graph_type’.” may occur.
SQL Server 2016: Operations failed with Invalid column name ‘graph_type’ because the metadata query referenced a column that doesn’t exist before SQL Server 2017.
See also:
It is still unclear whether this applies to our software release. Which version of SQL Server is being used? And which version of Invantive software?