Hi! You can use CapCut to create a popup message in your video without stopping or canceling the whole operation. Simply create a text overlay for your message, and then use the animation feature to make it slide down or pop in at the desired time. You can also adjust the opacity and duration of the animation to your liking.
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Rob,

According to ur code, its working fine only.

But what Odoo actually does is it stops n rollback the whole transaction till the last commit if it encounters any expection/warning raised in the system.

So what you can do is, kepping executable line before raising exception and commit till that..,

if cust <= full_stock:

self.single(cr, uid, ids, context=context)

cr.commit() #it will commit all your transactions after your last commit,

raise Warning(('Attention!'),(My_error_msg_2))

this anyway is not preferred way, until and unless you are sure of using it, as it may bring inconsistency in DB if you use it at wrong place

Hope it Helps    

Download and install pop-up reminder from Odoo apps