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  1. Only authenticated and authorized SPECIALIST, ASSISTANT, RECEPTIONIST , ADMIN employees can update external_id of preperson.

  2. Preperson can be updated only in OUTPATIENT or EMERGENCY legal entity type, if MPI identifier of preperson is being known (returns after Create preperson).

  3. Only external_id field can be updated.

  4. Update allowed for prepersons with status = ACTIVE.

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