Hey there, @Katelyn. 

Thanks for reaching out to the Community for support. I hope you're enjoying the day so far. I'm happy to lend a hand with your Inventory Stock Status by Site report.

It sounds like you may have some data integrity issues going on with your company file. Such as your purchase orders being damaged. I recommend deleting and recreating one of the purchase orders to see if this resolved the negative quantity. In doing this, if you no longer see the negative quantity, I recommend running a rebuild and verify on the company file. These utilities will scan and resolve any potential data damage your file may have that can cause issues such as this one. I've included some steps below to run a rebuild and verify. 

To Rebuild:

1. From the File menu, highlight over Utilities, then click on Rebuild Data.
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2. Select OK to the message that alerts you of a backup.
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3. Create your local backup. 
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4. Once the backup is finished, the Rebuild will automatically start. 

To Verify:

1. From the File menu, highlight over Utilities and click Verify Data.
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2. The Verify will begin automatically. 

If the Verify detects additional damage, it means the damage will need to be manually corrected. In this case, you'll need to contact our Technical Support Team. Our tech support can take a look into your account securely and help to resolve the damage. 

You can check out Resolving Potential Data Issues for further details. 

Please let me know if you have any questions or concerns. I'll be here every step of the way. You can reach out to the Community at any time. Take care!