Maryland Commercial Law Section 2A-514
§ 2A-514.
  (1)   In rejecting goods, a lessee's failure to state a particular defect that is ascertainable by reasonable inspection precludes the lessee from relying on the defect to justify rejection or to establish default:
    (a)   If, stated seasonably, the lessor or the supplier could have cured it (§ 2A-513); or
    (b)   Between merchants if the lessor or the supplier after rejection has made a request in writing for a full and final written statement of all defects on which the lessee proposes to rely.
  (2)   A lessee's failure to reserve rights when paying rent or other consideration against documents precludes recovery of the payment for defects apparent in the documents.