Message type: E = Error
Message class:  MI_MGMT - MI: Device Management 
Message number: 090
Message text: No language defined
Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.
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The SAP error message MI_MGMT090: No language defined typically occurs when the system is unable to determine the language settings for a user or a specific transaction. This can happen in various contexts, such as when trying to access certain functionalities in the SAP system that require language settings to be defined. Causes: User Profile Settings: The user profile may not have a language defined. This can happen if the user was created without specifying a default language. Client Settings: The SAP client may not have a default language set up correctly. Missing Language Packs: The required language packs may not be installed or activated in the SAP system. Transaction-Specific Issues: Certain transactions may require specific language settings that are not configured. Solutions: Check User Profile: Go to transaction SU01 (User Maintenance). Enter the user ID and click on the "Change" button. Check the "Defaults" tab to ensure that a language is defined. If not, set a default language (e.g.,
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