Error trying to itemize on corporate card transaction

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User has a corporate card transaction that is using itemization. Warning on screen indicates itemization is required, but upon clicking the itemize button, receives error "Entity is a required field." Once that error occurs, user cannot access itemization page to make any edits to chart of account or project information. Tried removing the expense item from the report and starting over, but still receive same error. Even changing the expense type to non-itemization category does not make the account information visible again. Has anyone experienced this?

Jon