Message type: E = Error
Message class:  USMD_CMM -  
Message number: 005
Message text: The system cannot create an empty entity key
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The SAP error message USMD_CMM005 ("The system cannot create an empty entity key") typically occurs in the context of SAP Master Data Governance (MDG) when there is an attempt to create or process a master data entity without a valid key or identifier. This error indicates that the system expects a unique identifier for the entity being created, but it is either missing or not properly defined.
Causes:
Missing Key Fields: The entity you are trying to create may have mandatory key fields that are not filled in.
Incorrect Configuration: The configuration of the data model or the entity might be incorrect, leading to the system not recognizing the key fields.
Data Model Issues: There may be issues with the data model configuration in MDG, such as missing or incorrectly defined entity types.
User Input Errors: The user may have inadvertently left key fields blank or entered invalid data.
Solutions:
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