Are you an AZ resident and need to do a Non resident North Dakota return? If so, enter 54-000 as your code.
From the ND instructions:
"If a full-year nonresident ............ use 54-000. If married filing jointly, this applies only if both spouses were full year
nonresidents." (
http://www.nd.gov/tax/data/upfiles/media/individual-income-tax-booklet_1.pdf?20170724185242)
