Message type: E = Error
Message class:  RSO_RES_QMSGS - Messages directly related to Query Designer. 
Message number: 079
Message text: Invalid language code used: &1 &2
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The SAP error message RSO_RES_QMSGS079 with the description "Invalid language code used: &1 &2" typically occurs in the context of SAP BW (Business Warehouse) or SAP BI (Business Intelligence) when there is an issue with the language settings in the system. This error indicates that the system has encountered a language code that it does not recognize or that is not valid.
Cause: Invalid Language Code: The language code specified in the request or configuration is not valid or not supported by the SAP system. Missing Language Settings: The language might not be installed or configured properly in the SAP system. Incorrect User Profile Settings: The user profile may have an incorrect or unsupported language setting. Data Source Issues: If the error occurs while loading data from a source, the source might be providing an invalid language code.
Solution: Check Language Codes: Verify the language code being used. Ensure that it is a valid SAP language code
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