My K-1 has box 16 checked saying K-3 is attached, but the support package states it will be available before 8/31/2022.

I own a couple of MLPs that report information on a K-1.  This year there is a box 16 that states whether form K-3 is attached.  None of the MLPs include the K-3, and instructions state it will be provided before Aug 31.   I live in NC, and Turbotax is asking for information from a form D-403 NC K-1.  None of the companies provided this information in the support package.  Does that mean none of the companies did business in NC?  Or do I need to go to the partnerships and request more information?