How can i prevent duplicate record of customer, supplier or inventory item?
Currently, you cannot. This capability is in the development roadmap.
When will we get this feature?
This feature is vital for error free posting and reports.
I already made mistakes quite few times and invoiced a new customer instead of the existing. Thus got me two different receivable for the same customer which we were unaware of.
Now I am even more concerned about my inventory as there are 100+ products and i unable to manage stock properly. Need to check back order manually to see if i oversold the same product, which is obviously time consuming and would raise confusion as well.
@lubos any interest in this?
As was said previously in this topic, this feature is on the development roadmap, http://www.manager.io/roadmap, at #6.