On the journal entry form, the revenue recognition rule field does not appear on the journal entry line (for creating revenue recognition from a journal entry). On all forms, the revenue recognition rule field is checked but still is not visible on the form. Does anybody have an idea of what the issue could be?

Just had a look in my ARM account. I see this field is respecting the Form customization. First principles 1) Check that the Form you are customizing is the specific form that you are using. 2) Try the Standard Journal Form to see is the revenue recognition rule field is present.

Found the problem, if multi book is activated, rev.rec rule appears only on book specific journal entry and not on the standard journal entry.