Box 17 of Schedule K-1 Form 1065 only have codes A to F. Box 17 of Schedule K-1 form 1120S has codes A - AC.
You must have a Schedule K-1 Form 1120S and are entering it as a Schedule K-1 Form 1065. Please go back and specify that your K-1 is from Form 1120S.(see attached screenshot).
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