How to export the scheduled date to taskjuggler

Question

Having (require 'ox-taskjuggler) in my init.el and hitting org-taskjuggler-export-process-and-open in foo.org renders the current date instead the expected scheduled date.

Content of foo.org

*** Foo                                                 :taskjuggler_project:
    :PROPERTIES:
    :ORDERED:  t
    :scheduled: <2025-12-09 Tue>
    :END:
**** Bar
     :PROPERTIES:
     :Effort:   2w
     :END:
**** Acme
     :PROPERTIES:
     :Effort:   2w
     :END:

results in

https://orgmode.org/worg/exporters/taskjuggler/ox-taskjuggler.html

Answer 1

As mentioned in a comment, SCHEDULED is a special property that should not go into a properties drawer: just like DEADLINE, it has to come right after the headline and before the properties drawer. That's where Org mode is looking for SCHEDULED or DEADLINE information.

So the Org mode file should look like this:

*** Foo                                                 :taskjuggler_project:
    SCHEDULED: <2025-12-09 Tue>
    :PROPERTIES:
    :ORDERED:  t
    :END:
**** Bar
     :PROPERTIES:
     :Effort:   2w
     :END:
**** Acme
     :PROPERTIES:
     :Effort:   2w
     :END:

M-x org-lint should flag problems like this and produce a useful report.