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# Checking for duplicates

If two or more sheets with the same 7-figure Code are uploaded to the task, the system will detect the sheets as duplicates.

Once you have clicked the '**Complete Upload(s)**' button, you will see this indicated on the **Issues** tab.

Click the **Issues** tab:

![](https://storage.crisp.chat/users/helpdesk/website/2d5d0b5095261a00/scans-upload-new8_16mub7a.png)

To Exclude a duplicate sheet, click the tick and it will turn into a cross:

![](https://storage.crisp.chat/users/helpdesk/website/2d5d0b5095261a00/scans-upload-new9_foc6nl.png)

| Please do not click the ticks to Exclude both sheets, just the second occurrence!