This could be a harmless error message produced by a query execution where server is blank, and it substitutes the old 'default' SQLQuery based connected named 'IDBC' (stood for Illuminator Database Connection - or something like that). It could be from the workbench running a TableList query to populate the panel, or something along those lines. Perhaps the iGrid with a blank query also might cause this when it tries to determine the list of data columns you have to choose from for data mapping.
If you have never had an actual dataserver called "IDBC" then likely it's a remnant or a gremlin from the past or simply an empty/missing query template. If you see it repeatedly in the NW logs, then perhaps you can pinpoint it, but might not be worth the effort.
Regards,
Jeremy
SAP Rapid Innovation Group - RIG
