During financial year closing, a processing error in a critical financial system occurs.

InITIL(Information Technology Infrastructure Library), anemergency changeis implemented to address urgent issues that significantly impact business operations, such as a processing error during financial year closing. Emergency changes are fast-tracked to restore service or prevent further disruption, bypassing some standard change management processes while still requiring approval.

Normal changes (A) follow the full change management process, standard changes (B) are pre-approved and routine, and exceptional (C) is not a standard ITIL term. Emergency change (D) fits the scenario of urgent action to avoid business delays.