Message type: E = Error
Message class:  EAMS_BO - Business Object Layer 
Message number: 421
Message text: Order is processed with SAP Fiori App "Respond to Malfunction"
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The SAP error message EAMS_BO421, which states "Order is processed with SAP Fiori App 'Respond to Malfunction'," typically occurs in the context of SAP Asset Management or SAP Plant Maintenance when there is an attempt to process a maintenance order that is already being handled through the Fiori application.
Cause: Concurrent Processing: The error usually arises when a maintenance order is being processed in the Fiori app "Respond to Malfunction" while another user or session is trying to access or modify the same order in a different application or transaction. Locking Mechanism: SAP employs a locking mechanism to prevent data inconsistencies. If the order is locked by the Fiori app, other attempts to process the order will be blocked, leading to this error message. Session Management: If a user has multiple sessions open and is trying to perform actions on the same order in different sessions, it can lead to this error.
Solution: Check Active Sessions:
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