I wanted to clarify when the Project Team Letter should be completed for the v4.1 IP credit. The credit language says the letter should, "Describe the approach developed by the project team for engaging a clearly defined and manageable integrative design process beginning in pre-design and continuing throughout the design phases". Should the letter be dated and written before the completion of schematic design (similar to the water and energy analysis), or can it be written/dated later in design to include how the integrative process influenced other design phases.

Thank you in advance for your help!