Message type: E = Error
Message class:  RSO_RES_QMSGS - Messages directly related to Query Designer. 
Message number: 154
Message text: Utilized component &1 has been changed in the meantime.
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The SAP error message RSO_RES_QMSGS154 indicates that a utilized component (such as a query, InfoProvider, or other objects) has been changed while you were working with it. This typically occurs in the context of SAP BW (Business Warehouse) or SAP BI (Business Intelligence) when you are trying to execute or manage queries, reports, or data models that depend on components that have been modified.
Cause: Concurrent Changes: Another user or process has modified the component you are trying to access or utilize while you were working with it. Transport Requests: Changes made in a development environment that have not yet been transported to the production environment can lead to inconsistencies. Versioning Issues: If the system is using different versions of the same component, it can lead to conflicts. Data Model Changes: Changes in the underlying data model, such as changes to InfoObjects, InfoProviders, or queries, can trigger this error.
Solution: Refresh the Session: Log out and log
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