Message type: E = Error
Message class:  MDG_ID_MATCH_UI_BS - Message Class for ID MATCHING UI 
Message number: 021
Message text: Do you want to save the current mapping group?
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The SAP error message MDG_ID_MATCH_UI_BS021 typically occurs in the context of SAP Master Data Governance (MDG) when there is an issue related to the mapping of IDs during the data governance process. This message usually prompts the user with a question about whether they want to save the current mapping group, indicating that there may be unsaved changes or a need to confirm the mapping before proceeding.
Cause: Unsaved Changes: The error often arises when there are changes made to the mapping group that have not been saved. Mapping Group Issues: There may be inconsistencies or issues with the mapping group that need to be addressed before saving. User Action: The user may have attempted to navigate away from the mapping screen without saving their changes.
Solution: Save Changes: If you have made changes to the mapping group, ensure that you save them before proceeding. Look for a "Save" button or option in the UI. Review Mapping
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