Formula.Firewall: Query references other queries, so it may not directly access a data source.

[Greg_Deckler]

OK, I've read a little bit about this error but wasn't able to find anything exactly equivalent to what I am running into. Basically, all I was trying to do was add a global parameter so that I could easily change the source of my Folder ingest path. 

This query works great:

let
Source = Folder.Files("c:\powerbi\dev\Ingest\Monthly\FN"),
#"Invoke Custom Function1" = Table.AddColumn(Source, "Transform File from Test (2)", each #"FN Transform File"([Content])),
#"Renamed Columns1" = Table.RenameColumns(#"Invoke Custom Function1", {"Name", "Source.Name"}),
#"Removed Other Columns1" = Table.SelectColumns(#"Renamed Columns1", {"Source.Name", "Transform File from Test (2)"}),
#"Expanded Table Column1" = Table.ExpandTableColumn(#"Removed Other Columns1", "Transform File from Test (2)", Table.ColumnNames(#"FN Transform File"(#"FN Sample File"))),
...

The minute I do this (referencing a parameter in the Source line:

let
Source = Folder.Files(#"Root Path" & "\Ingest\Monthly\FN"),
#"Invoke Custom Function1" = Table.AddColumn(Source, "Transform File from Test (2)", each #"FN Transform File"([Content])),
#"Renamed Columns1" = Table.RenameColumns(#"Invoke Custom Function1", {"Name", "Source.Name"}),
#"Removed Other Columns1" = Table.SelectColumns(#"Renamed Columns1", {"Source.Name", "Transform File from Test (2)"}),
#"Expanded Table Column1" = Table.ExpandTableColumn(#"Removed Other Columns1", "Transform File from Test (2)", Table.ColumnNames(#"FN Transform File"(#"FN Sample File"))),
...

I get the error on the "Expanded Table Column 1" line. Even after reading about this error in a couple blog posts, I do not see how I am running afoul of the formula police and how to fix it.

Any suggestions out there?

[MattAllington · Accepted solution]

I had exactly the same issue. Seems like a valid use case to me. I had to turn off the privacy checking to make it work. 

[Anonymous]

I had the same issue and tried turning off privacy checking. it works in desktop but when i publish to service...it does not work and throws same error. any suggestions?

[Fraz707]

@Anonymous  did you find any solution for this?

[Greg_Deckler]

Thanks Matt, at least I'm not crazy!!