DataCite DOI: When encountering a duplicate, does not select a new value, just fails.

[kcondon]

This may be a requirements issue rather than a bug but the FRD says, "(Part of the DOI reservation process is to make sure that identifiers are not duplicated. If a duplicate is discovered, another identifier will be submitted. This will continue until a unique identifier is minted.) "

What actually happens is it just fails and never allows for trying another identifier. Gives an error:
Error – This dataset may not be published because the DOI update failed. Please contact Dataverse Support for assistance. Please contact support.

[sekmiller]

Fix checked into branch

[kcondon]

Now it just pretends to succeed but doesn't -indexes and published locally but does not register/update DataCite record.

[sekmiller]

Fix has been checked in. As we discussed the publish will retry with a new identifier when one already exists on the DataCite site.

[kcondon]

Works, closing.