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Unable to set zone back to None "<None>" using ModelBuilder.
When updating a model's zone attribute using ModelBuilder, why do I get the following message?
"Warning: Unable to assign attribute "Zone" for element "P-1" because referenced element "<None>" does not exist."
[Problem #: 41084]
This is because the program is expecting a zone called "<None>" to exist in the zone manager and will not know that you meant to set it back to None.
Option 1: To set a zone back to <None>, leave that field/cell blank in your source data file.
Option 2: Create a zone in the zone manager called "<None>".
[Solution #: 500000067620]
Building and updating a model using ModelBuilder