What causes Fabric Pipeline Error 2508?

Multiple subfolders under folderPath contain files with identical names. Folder structure was not accounted for when configuring the Azure Batch activity resource path. Assets were reorganized into subdirectories without updating the Batch activity configuration

How do I fix Fabric Pipeline Error 2508?

Step 1: Review the resource folderPath configured in your Azure Batch activity and identify all subfolders containing files with duplicate names.. Step 2: If folder structure must be preserved, zip all required files into a single archive before uploading to the storage account.. Step 3: Add an unzip command to your Batch activity execution script, for example: powershell.exe -nologo -noprofile -command "& { Add-Type -A 'System.IO.Compression.FileSystem'; [IO.Compression.ZipFile]::ExtractToDirectory($zipFile, $folder); }" ; $folder\yourProgram.exe. Step 4: If folder structure is not required, rename duplicate files to be unique across all subfolders before placing them in the resource path.. Step 5: Re-run the pipeline after resolving duplicates and verify the Batch activity completes successfully.

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Power BI Refresh Error:
Fabric Pipeline Error 2508

What does this error mean?

Multiple files with the same name exist in different subfolders of the specified folderPath. Azure Batch activities flatten the folder structure, causing filename collisions.

Common causes

1Multiple subfolders under folderPath contain files with identical names
2Folder structure was not accounted for when configuring the Azure Batch activity resource path
3Assets were reorganized into subdirectories without updating the Batch activity configuration

How to fix it

1Step 1: Review the resource folderPath configured in your Azure Batch activity and identify all subfolders containing files with duplicate names.
2Step 2: If folder structure must be preserved, zip all required files into a single archive before uploading to the storage account.
3Step 3: Add an unzip command to your Batch activity execution script, for example: powershell.exe -nologo -noprofile -command "& { Add-Type -A 'System.IO.Compression.FileSystem'; [IO.Compression.ZipFile]::ExtractToDirectory($zipFile, $folder); }" ; $folder\yourProgram.exe
4Step 4: If folder structure is not required, rename duplicate files to be unique across all subfolders before placing them in the resource path.
5Step 5: Re-run the pipeline after resolving duplicates and verify the Batch activity completes successfully.

Frequently asked questions

Why does Azure Batch flatten the folder structure?

Azure Batch copies resource files into a single working directory on the compute node, so subdirectory hierarchy from the storage account is not preserved. Any two files sharing a name across different subfolders will collide during this copy step.

Is zipping the files the only workaround?

No. You can also rename duplicate files to be unique across all subfolders, or restructure your storage layout so no two files under folderPath share the same name. Zipping is recommended when the original folder hierarchy is required by the executable.