Message type: E = Error
Message class:  RSO_SEGR - Messages for TLOGO = SEGR  (Semantic Group of ADSOs) 
Message number: 251
Message text: CompositeProvider specified even though 'unset' flag is set
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The SAP error message RSO_SEGR251 indicates that a CompositeProvider has been specified in a query or data model, but the system has detected that the 'unset' flag is set. This typically means that the CompositeProvider is not supposed to be used in the current context, possibly due to configuration or design issues.
Cause:
Configuration Issues: The CompositeProvider may have been incorrectly configured, or there may be a mismatch between the CompositeProvider and the underlying data sources. Query Design: The query that references the CompositeProvider may not be designed correctly, leading to the system flagging it as 'unset'. Data Source Compatibility: The data sources used in the CompositeProvider may not be compatible with the query or the data model being used. Authorization Issues: There may be authorization issues preventing access to the CompositeProvider.
Solution: Check CompositeProvider Configuration: Verify the configuration of the CompositeProvider in the SAP BW/4HANA or SAP BW system. Ensure that all data sources are correctly defined
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