19081 Can not change the fkNumPlan field on EndUserNumPlanMap
As both the new & old DNs exist there shouldn't be a problem, updating the primary extension to a non-existent number produces the error message below:
WARNING : PRIMARY EXTENSION : 6701 in Internal does not exist. If all other values in the CSV are correct, then user will be inserted/updated without primary extension.
However it wouldn't update the primary extension until I'd deleted the old DNs, after having done that the BAT update worked just fine. So for CUCM 9.1.2 at least, the order of operations for bulk renumbering is:
- Use BAT to update phones & their DNs
- Delete old DNs
- Use BAT to update user's primary extension