The purpose of the parties in submitting their controversy to arbitration, is to terminate such controversy; and an award which leaves any material part of the controversy for future arbitration or for litigation, fails to perform the terms of the submission substantially. The award must be complete and it must not omit any material questions which are included in the submission.1 If provision is made for determining the value of property by arbitration, an award which omits a material portion of such property is insufficient.2 . The same reasons that require an award to be definite and to be complete, require it to be final as between the parties.3