Message type: E = Error
Message class:  RSO_CTC - Message class for CTC related messages 
Message number: 004
Message text: DataSources of source system &1 not replicated
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Run transaction RS_LOGSYS_CHECK; select the Replicate checkbox for the
checked source system and execute.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message RSO_CTC004 indicates that there is an issue with the replication of DataSources from a source system to the SAP BW (Business Warehouse) system. This error typically occurs when the DataSources in the source system are not properly replicated or are missing in the BW system.
Cause: Missing DataSource: The DataSource in the source system may not exist or may not be activated. Replication Issues: There may be issues during the replication process, such as network problems or configuration errors. Authorization Issues: The user performing the replication may not have the necessary authorizations to access the DataSources in the source system. Incorrect Source System Configuration: The source system may not be correctly configured in the BW system. Transport Issues: If the DataSource was recently transported, it may not have been activated in the target system.
Solution: Check DataSource Existence: Verify that the DataSource exists in the source system and is activated. You can do this
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