I know it’s basic, but I haven’t found so far…
I was thinking I need roll up, but it say “You need a link field to create a rollup. Create the link field before configuring this rollup field.”.
And I don’t get it ( maybe because I am french).
Thx you so much for your prompt reply.
I have just tried, and I have an error.
I then try to do a realy basic formula, and I still have the same message.
I put in copy the screen and the formula.
Can you help ?