Don't miss your chance to take the Fabric Data Engineer (DP-600) exam for FREE! Find out how by watching the DP-600 session on-demand now through April 28th.
Learn moreJoin the FabCon + SQLCon recap series. Up next: Power BI, Real-Time Intelligence, IQ and AI, and Data Factory take center stage. All sessions are available on-demand after the live show. Register now
Expression.Error: We cannot convert the value "[Function]" to type Function.
Details:
Value=[Function]
Type=[Type]
Table.TransformColumnNames(Table1_Table, each
List.Accumulate(Table.ToRecords(Mapping), _ ,
(state, current)=> Text.Replace(Text.Upper(state),current[BEFORE],current[AFTER]) ))
Privacy Error
Mapping
let
Source = Folder.Files(MapPath),
#"Filtered Hidden Files1" = Table.SelectRows(Source, each [Attributes]?[Hidden]? <> true),
#"Invoke Custom Function1" = Table.AddColumn(#"Filtered Hidden Files1", "Transform File (2)", each #"Transform File (2)"([Content])),
#"Renamed Columns1" = Table.RenameColumns(#"Invoke Custom Function1", {"Name", "Source.Name"}),
#"Removed Other Columns1" = Table.SelectColumns(#"Renamed Columns1", {"Source.Name", "Transform File (2)"}),
#"Expanded Table Column1" = Table.ExpandTableColumn(#"Removed Other Columns1", "Transform File (2)", Table.ColumnNames(#"Transform File (2)"(#"Sample File (2)"))),
#"Changed Type" = Table.TransformColumnTypes(#"Expanded Table Column1",{{"Source.Name", type text}, {"BEFORE", type text}, {"AFTER", type text}})
in
#"Changed Type"
Data
let
Source = Folder.Files(DataPath),
#"Filtered Hidden Files1" = Table.SelectRows(Source, each [Attributes]?[Hidden]? <> true),
#"Invoke Custom Function1" = Table.AddColumn(#"Filtered Hidden Files1", "Transform File (5)", each #"Transform File (5)"([Content])),
#"Renamed Columns1" = Table.RenameColumns(#"Invoke Custom Function1", {"Name", "Source.Name"}),
#"Removed Other Columns1" = Table.SelectColumns(#"Renamed Columns1", {"Source.Name", "Transform File (5)"}),
#"Expanded Table Column1" = Table.ExpandTableColumn(#"Removed Other Columns1", "Transform File (5)", Table.ColumnNames(#"Transform File (5)"(#"Sample File (5)")))
in
#"Expanded Table Column1"
Thank you. I know its a firewall issue but i need to maintian the Privacy option. How to overcome the issue retaining 'Privacy'. Please suggest. Tx
Have no idea, sorry. Just
make sure that the privacy level for both data sources is compatible (Public/Public or Organizational/Organizational)
Check out the April 2026 Power BI update to learn about new features.
If you have recently started exploring Fabric, we'd love to hear how it's going. Your feedback can help with product improvements.
A new Power BI DataViz World Championship is coming this June! Don't miss out on submitting your entry.
| User | Count |
|---|---|
| 3 | |
| 3 | |
| 3 | |
| 2 | |
| 2 |
| User | Count |
|---|---|
| 8 | |
| 6 | |
| 5 | |
| 5 | |
| 4 |