k-1 Box 20 code N

you can't because it's required reporting that probably has no effect on the partner's taxes

Code N. Business interest expense. For tax years beginning
after November 12, 2020, the partnership will report your share of
the partnership's deductible business interest expense for inclusion
in the separate loss class for computing any basis limitation (defined
in section 704(d), Regulations section 1.163(j)-6(h)). This
information is necessary if your losses are limited under section
704(d). Deductible business interest expense is reported elsewhere
on Schedule K-1 and the total amount is reported here for
information only and was already included as a deduction on
another line of your Schedule K-1. Included in the code N
information is a statement providing the allocation of the business
Partner's Inst. for Sch. K-1 (Form 1065) (2022) -17-
interest expense already deducted by the partnership by line
number on Schedule K-1.
The partner must remove the business interest expense
deductions from these referenced lines when computing any
basis limitation.
Any excess business interest expense not deductible under
section 163(j) will be included in box 13, code K, for inclusion in the
basis limitation and is not reported here. See Worksheet for
Adjusting the Basis of a Partner's Interest in the Partnership for
additional information about computing the loss limitation.