“A claim under section 80 of [VATA] shall be made in writing to the Commissioners and shall, by reference to such documentary evidence as is in the possession of the claimant, state the amount of the claim and the method by which that amount was calculated.”
“111. That test, in our view, will be satisfied only if the later claim arises out of the same subject matter as the original claim, without extension to facts and circumstances that fall outside the contemplation of the earlier claim. Without deciding matters outside of this appeal, we consider, for example, that this would generally include cases where a particular computation was not made at the time of the original claim, but the subject matter of the claim was sufficiently identified for such a calculation made subsequently to be related back to the original claim. Simple calculation errors would similarly be included. It should also cover, we think, cases where particular items within the category of the subject matter of the original claim are unknown or not fully identified at the time of the original claim, 11 and would but for that fact have been included in the original claim, but only subsequently come to light.”