Project
This field is optional for the PR.
The projects available will be limited to:
Those that have an Owning Organization that belongs to the same Legal Entity as the Legal Entity defined on the PR
Those that allow time reporting (for labor detail lines), expense reporting (for expense detail lines), and/or item reporting (for item detail lines), unless task allows reporting.
If project is populated on the summary page, then the detail lines will be pre-populated with that project and you cannot change it. If it is not populated on the summary page, then the detail lines can have different projects.