Meaning: The starting position of the member logical axis is coincident with the end point of the logical axis. This is likely a result of computing a member that is related at both ends to one or more objects and these related objects are coincident. This problem can also occur as a result of a member having two surface default frame connection relations to the same surface and the owner of this surface was moved.
Recovery:
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Open the Structure task.
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Click Select .
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Set the Locate Filter to Frame Connections.
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Select one of the frame connections of the member in error.
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Select By Rule from the Connection box on the ribbon.
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Redefine the end location of the member such that the member is no longer zero in length.
Another recovery option is to delete the zero length member.