I have created an investment in a workpackage by mistake, but I can no longer delete it. What should I do?

Indeed, there is a bug in this section, which is solved, but the fix will only be available in the next version of Jems, end of November.
In the meantime, to avoid any blocking in the submission of your project, you can specify the mention ‘To be deleted’ in the description, as well as the values ‘N/A’ for the text fields or zero for the numeric fields. A random location can also be specified in the dedicated field.

Please keep in mind that as for many other Jems fields, the EN & FR versions must be filled in to avoid errors in the pre-submission check.