Message type: E = Error
Message class:  IB_R3_ECN_LIST2 - Messages of IBase Object "Change Number List" 
Message number: 000
Message text: The required list of change numbers does not exist
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The SAP error message IB_R3_ECN_LIST2000 indicates that the system is unable to find the required list of change numbers for a specific operation or transaction. This error typically occurs in the context of Engineering Change Management (ECM) or when dealing with change numbers in SAP. Causes: Missing Change Numbers: The most common cause is that the change numbers you are trying to access or use do not exist in the system. Incorrect Configuration: There may be issues with the configuration of the change management settings in SAP. Authorization Issues: The user may not have the necessary authorizations to view or access the change numbers. Data Inconsistencies: There could be inconsistencies in the data or master records related to the change numbers. System Errors: Occasionally, system errors or bugs can lead to this message being displayed. Solutions: Check Change Numbers: Verify that the change numbers you are trying to access actually exist in the system. You can do this
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