In a service contract (scope item 3MO), the item-level transaction list shows:

Released service orders: Service orders (e.g., transaction type SRVO) linked to the contract item are visible once released, tracking service execution.

Completed service confirmations: Confirmations are linked to orders, not directly listed at the contract item level.

Released maintenance orders: Only relevant in advanced execution, not standard contract visibility.

Released customer service orders: Not a distinct transaction type in S/4HANA Service.

This is part of the contract monitoring functionality.

'Released service orders are visible in the transaction list at the service contract item level.' (SAP Help Portal, Service Contract Monitoring).