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Error: Could not add the specified data object to the map

Error Message

In ArcGIS 9.1 and earlier, the following warning occurs if a relationship class is added into ArcMap using the Add Data button.

"Could not add the specified data object to the map."

Cause

ArcMap does not support loading a relationship class as a data layer.

Solution or Workaround

This warning does not indicate there is a problem with the relationship class. The functionality of a relationship class is always available when objects participating in that relationship class are loaded into ArcMap.

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