My client provided a K-1.  Box 16 is checked (Schedule K-3 is attached if checked).  No K-3 is actually attached.  The cover letter that came with the K-1 states: "Schedule K-3 information can be accessed . . . by the end of June 2023 and is not otherwise included"  Do I need to wait to file the return until the K-3 is accessed?  The K-1 information is all zeros.