# Troubleshooting DRAGEN Array Cloud error Sample sheet missing required columns

DRAGEN Array v1.3 introduced new sample sheet features:

* GenomeStudio backwards compatible sample sheet support and related deprecation of separate IDAT and GTC sample sheets.
* User-defined data from the sample sheet will get passed to gt\_sample\_summary files during genotyping.

These sample sheet features are compatible only with DRAGEN Array Local CLI Analysis.

When launching DRAGEN Array Cloud Analysis on BaseSpace using a GenomeStudio-formatted sample sheet, the following error appears: Samplesheet is missing required columns "beadChipName" and "sampleSectionName"

![](https://761066130-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FGM9W2DuBTgEXv1ClCm8H%2Fuploads%2Fgit-blob-eaabce8f941220fca19a30b8238170893ee945bd%2Fimage1.jpg?alt=media)

To resolve this error, use correct format for Cloud sample sheet. Cloud analysis does not currently support sections found in the GenomeStudio sample sheet such as Header and Data. Cloud analysis does not use SentrixBarcode\_A and SentrixPosition\_A to identify samples.

DRAGEN Array Cloud sample sheet uses the following two column headers which must be included in the CSV file:

* beadChipName
* sampleSectionName

Example:

![](https://761066130-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FGM9W2DuBTgEXv1ClCm8H%2Fuploads%2Fgit-blob-29ff9ee70e0ac9bdeaf06cef6ea134fa29908cee%2Fimage2.jpg?alt=media)

Cloud Sample Sheet Template is available on the sample selection interface on BaseSpace:

![](https://761066130-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FGM9W2DuBTgEXv1ClCm8H%2Fuploads%2Fgit-blob-02bfad24538b56b0852355482a6dd9a93e74078e%2Fimage3.jpg?alt=media)

Local and Cloud Sample Sheet templates are available on the [DRAGEN Array Secondary Analysis Software Downloads Page](https://support.illumina.com/array/array_software/dragen-array-secondary-analysis/downloads.html).

For more information, see [DRAGEN Array User Guide](https://help.dragenarray.illumina.com/) and [Release Notes](https://help.dragenarray.illumina.com/reference/release-notes).

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