I am trying to create a unique ID for list items. The id number should have the format : year of creation & month of creation & id (1,2,3,etc) ; the result i want to be something like 1711001 , 1711002, or 1712006, etc.
I created a column and put the formula :
The first launch it work ok, but if i open and save again one item, its id number is going to "991200"
I am using only sharepoint in IE, no designer or programming tools. Thank you for your help.