CLASS validation for UMR This includes:  A change to prevent modification of the UMR on first or subsequent advices, once the first transaction has been released  Enforcement of the above validation for both Lloyd's and Company market claims released via the online system  A provision to allow the UMR to be modified on first advices which are only partially saved, but not yet released for agreement  A provision to allow the UMR to be modified post-release on a claim transaction, in the event of a Mid-Term Broker Change
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