Hi guys.

I have a situation with products getting received. 

We are a repair facility and we have modified Odoo to meet our needs. We have this scenario.

A customer calls us and they tell us "watch the product that is coming in to your building and has this tracking number: 123456789". That's it, no more info from them. Now i have to show a warning when the a serial number with that tracking number gets in the receiving operation.

I have added a text field (x_studio_tracking) on stock.production.lot model (lot/serial). then a related field to  x_studio_tracking on the stock.picking model. 

From there im thinking on making a new model called Flag and in there i will add in a field where i can add the tracking number the customer gives me and a note.

How can i set a popup with the Note or a warning when the tracking number that the employee puts in x_studio_tracking is the same to the one i have added in my Flag model?

Thanks for your time