When reshaping user gets a Cannot change start measure error
Check the vertices on the shape. Its probably a multi-part geometry which is not allowed for datum elements. The workaround is to delete the actual shape record from the base spatial table e.g. delete from sdo_network_table where ne_id=1234 and then re-digitise a new geometry and then check the [assign to existing] box in the SM Create new section form to assign the new geometry to the existing logical record.
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