Insufficient Permissions for Purchase Order Items Update after Workflow Submission

How do i update purchase order items after submission? When i try to update i get this error:
But i don’t know what permission to assign to user to enable items update. Any help will be appreciated.


This is likely coming from the transition rule. See what role is allowed modification or the next assignment as per the transition rule and see if the same is assigned or not.

I suspected as much the thing is i cannot figure out specifically the transition rule that would allow for update. Mind you, this issue relates to updating items AFTER document has been submitted so workflow transition has been completed. Yet it refers me to transition rule to be able to update items and i can’t figure out what transition rule to add to enable items update, hence my dilemma.

Hi there. Have you figured this out? Thank you in advance.