Could you please share a bit more about your scenario?
Do you mean that the Code_Equt column value within your SP list could not be updated?
How do you save your barcode into your SP list data source?
Further, do you want to reset the barcode the Barcode control captured?
Currently, Reset functionality is not supported in Barcode control itself within PowerApps. As an alternative solution, you could consider take a try to reset the context variable using Resetbutton within your app.
I have made a test on my side, please take a try with the following workaround:
Set the OnSelectproperty of the "Scan Barcode" button to following:
Set the OnSelect proeprty of the "Reset" button to following:
Set the Default property of the Text Input box to following:
Note: If you want to reset your barcode, please click "Reset" button.
Community Support Team _ Kris Dai If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.