Error: 'Execution Timeout Expired' when running sales order items merge

Run the data import and the following data import error generates:-
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​Orchestrate Data Flow import has failed. The Detailed information is as follows:
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Execution Timeout Expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
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Import Command:
EXEC [wf].[pr_Merge_Sales_Order_Items]

Please raise a new case online and reference the title of this article.