Assign source of supply in PR from SO

I have a PR that automatically created from SO.

I have already created outline agreement for each material in PO and created source list (with fix indicator) too.

But when I click "Assign source of supply" button in PR, system ask me to choose between outline agreement and info record.

If I create PR manually with the same materials, the outline agreement will be assigned immediately after I click "Assign source of supply" button.

Is there any master data or config that make these PRs act differently?

Thanks for your help.

Duangsamorn.