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Validate: datastream checksum 
F3 managed (type "M") datastreams ONLY ((ie not inline XML):
Compare the F6 checksum with the corresponding checksum of the F3 datastream version. The latter will need to be generated using the same algo used for the F6 checksum.
Optional flag to allow users to skip this checksum validating step (as it may be resource/time intensive) . : checksumming is turned off by default .
Versions
Validate: object versions (N/A)
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The results of a validation should provide a report that allows the user to understand an overall summary of the results, lists of error types by count, the list of objects by error type, summary of errors by object and detailed validation logs by object.
HTML
TSV
Validate objects in list
The user should be able to provide a list of object IDs to include in a validation routine.
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