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Bug: The AddField tool puts a schema lock on the input feature class

Description

** This issue is addressed in ArcGIS 9.1 Service Pack 1 (SP1) **

In scripting, the AddField tool puts a schema lock on the input feature class. This lock causes problems when users attempt to further manipulate the feature class.

Cause

This is a known issue.

Workaround

Note:
This issue is addressed in ArcGIS 9.1 Service Pack 1 (SP1).

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