301-52.11—What must I do to challenge a disallowed claim?
You must:
(c)
Provide receipts for all disallowed items reclaimed that require receipts, except that you do not have to provide a receipt if your agency already has the receipt.
(e)
State the proper authority for your claim if you are challenging your agency's application of the law or statute.
(g)
If after reconsideration by your agency your claim is still denied, you may submit your claim for adjudication to the GSA Board of Contract Appeals in accordance with 48 CFR part 6104.