Retirement tax questions

Thank you!
I figured that it is Schedule K-1 (Form 1065).  But this Schedule K-1 form came with the Schedule K-3 form.  Which, according to the TT instructions I can skip if Schedule K-3 has No Foreign Income or Taxes.   
I am trying to figure this out (if Schedule K-3 has any Foreign Income or Taxes).   Confusing.
Thank you again.