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The scope of AA/TC pairs for local IDs is the whole PKB Organisation. All AA/TC pairs for a PKB Organisation (and for all PKB Teams within that PKB Organisation) must be unique across the PKB Organisation.
In addition, a Type Code can only be used with a wildcarded Assigning Authority if that Type Code is not used by any other local ID within the PKB Organisation (or any PKB Teams within that PKB Organisation).
A local ID AA/TC pair must not match the AA/TC pair for any national ID.
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