Details an event that occurred when processing the application. To view the other event logs, select 
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Event logs consist of the following:
- Message summary of the event, such as File not imported - an unexpected error occurred whilst processing the file. Try to upload the file again..
- Entity identifier that is the unique identifier for the event.
- Event type and Severity are Error.
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Category of the event is Immigration for Visa sponsorship.
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Subcategory details the specific event that generated the event log, such as CasExport and CasImport.
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Date and Time the event log was generated.
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Additional information about the event, such as the Correlation identifier that is used to group related events, Event log identifier that is the unique identifier of the event log, and the details of the event, such as File not imported - the file contains a single file with the XML suffix but it is not a valid UKVI import file. Review the file and try again..