* Don't allow don't know as 2023 mortgageused * Don't allow don't know as 2023 mortgageused for discounted ownership * Allow mortgageused don't know if stairowned 100 * Update row parser test * Move mortgageused validations onto the log model * Allor outright sale mortgageused 3, don't allow non staircaseing shared ownership mortgageused 3 * Rebase fix
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