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: It is often used as a code for Sequence of Events (SOE) recording, which captures the exact timing of changes in status (like a circuit breaker tripping) within industrial systems.
: In large organizations like ENTSO-E (European Network of Transmission System Operators for Electricity), similar alphanumeric codes are used to categorize interoperability tests and XML instance comparisons. SOE-274
entso-e interoperability tests for the market april 2015 : It is often used as a code