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Unable to set zone back to "<None>" using ModelBuilder

Product(s): SewerGEMS, SewerCAD, StormCAD, CivilStorm, PondPack, WaterGEMS, WaterCAD, HAMMER
Version(s): 08.11.XX.XX and 10.00.XX.XX
Area: Layout and Data Input

Problem

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]

Solution

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]

See Also

Building and updating a model using ModelBuilder

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