It is very unlikely you'll be doing a bulk update in the Topic Authority File unless we've sent you a page of instructions to sort out code changes.

The update process is the same as all the other bulk update methods...

• Set Selection Criteria and click Apply button
• Check the list of records displayed to make sure you have used the correct selection criteria
• Set Replacement criteria and click Replace
• Check the number of records about to be replaced matches your expectations and say Yes to make the changes...