# Workflow frequently asked questions for the Illumina Protein Prep Automation System (IPPAS)

**How is barcode scanning done? What does the manual process look like?**

* The IPPAS (RGA) will scan anything on deck.
* Use the below-deck hand scanner to scan info on QC tubes or if RGA scanning fails.
  * It is also possible to manually type barcodes into ILASS if needed (eg, during water runs or if barcodes are smudged).

**If the reagent barcodes are unreadable both by automated and manual scanning, what is the workaround to resolve this problem?**

* For customer sample runs, ILASS will display the expected barcode format so a barcode can be entered manually. Example:
  \*

  ```
  ![](/files/1zGJxI4L2epiJIqsnDQO)
  ```

  * “Enter \[0-9]{6}\[A-Z]{1}” means enter 6 numbers (0-9) and 1 letter (A-Z), example: 123456A

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| *For any feedback or questions regarding this article (Illumina Knowledge Article #9786), contact Illumina Technical Support* [*techsupport@illumina.com*](mailto:techsupport@illumina.com?subject=Question%2FFeedback%20Regarding%20Illumina%20Knowledge%20Article%20#000009786%20-%20Library%20Preparation%20\&body=Dear%20Illumina%20Technical%20Support,%0D%0A%0D%0A)*.* |


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