System flow

Hi, anyone can help me? i make some sequence to my apps like below flow :

scan barcode > if already scan pop up noti
if not scan > add row
but the action not work, i already change many situation in the action. pls help me.!

I don’t have that much experience with scanning barcodes, but I believe it’s an action itself, so you can’t add branches of logic after that action, in a custom action chain, as of now.

I believe what you can do for now is:

  • Add a button to scan the barcode and write it to a column.
  • Use a relation to determine if the barcode has been added or not. If added, show a hint that it has been added. If not, show a button to add a new row with that code.

That should be done in a custom form environment.