A very strange one. We have a scan gun that send the data twice. The hardware people are looking into it. I have a validation in the script to avoid duplicate but in this case, it looks that the info are coming exactly at the same time, thus the validation of the duplicate is not firing. I would like to add "something" at the save, to let go the first one but not the second. In other word, I need to have a unique key. Can we do that in Netsuite ?

The SAFE guide details concurrency issues in section 4.7