Cause

A GUID with the same value '<x>' exists at more than one function in the project. Each function must have a unique GUID to allow export to AutomationML.

Solution

Possibility 1

1. Locate the main functions that have the GUID that has been assigned several times in the project by using the Go to (graphic) or Synchronize selection functions offered by the popup menu of the Message management dialog.
2. Call up the property dialog respectively for each main function.
3. Assign a unique value in the properties table in the GUID (AutomationML) field.
4. Click [OK].

Possibility 2

1. Select the following commands: File > Organize > Optimize > Compress project
2. Click [...] next to the Settings field in the Compress project dialog.
3. In the subsequent dialog branch to the AutomationML GUIDs setting under Remove project data and activate this check box.
4. Click [OK].
   
   The AutomationML GUIDs are deleted for all functions.
5. Export the data again in the AutomationML format.
   
   The AutomationML GUIDs are reassigned for each function.

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If required, start a new check run.