Probability of duplication autogenerated Ref

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q.Lambda('vehicle',
    q.Create(q.Select('ref', q.Var('vehicle')), {
        data: ...
     }),
 )

What is the probability that the reference (automatically generated) in one company will also be in another company? I want to copy documents from one company to another to synchronize the data later, using the same Ref. Is it safe?

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Hi @ProjectINT!

Within a single region group, the chance of document id collision is zero, so long as you just use the automatically generated ids.

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Update: @ProjectINT Our engineers corrected me that ids are now unique across region groups. This was a necessary step to enabling our Backup and Restore feature, which lets you copy databases from one RG to another. Databases are also documents with their own IDs (though we use their names to access them in FQL).

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