How To Fix UD628 - Select at least one entity type or exactly one data model.

SAP Error Message - Details

• Message type: E = Error

• Message class: UD - EDM - Enterprise Data Model

• Message number: 628

• Message text: Select at least one entity type or exactly one data model.

Self-Explanatory Message

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message UD628 - Select at least one entity type or exactly one data model. ?

  The SAP error message UD628, which states "Select at least one entity type or exactly one data model," typically occurs in the context of using the SAP Data Modeler or when working with data modeling tools in SAP systems. This error indicates that the user has not selected the required entity types or data models necessary to proceed with the operation.
  Cause:
  
  No Selection Made: The user has not selected any entity types or data models in the interface.
  Multiple Selections: The user may have selected multiple entity types or data models when the system expects exactly one.
  User Interface Issue: There may be a glitch or issue in the user interface that prevents the selection from being registered correctly.
  
  Solution:
  
  Select Entity Types: Ensure that you select at least one entity type from the available options. This is necessary for the operation you are trying to perform.
  Select Exactly One Data Model: If the operation requires a single data model, make sure to select only one and deselect any others.
  Check for Filters: If there are filters applied that limit the visibility of entity types or data models, adjust or remove these filters to see all available options.
  Refresh the Interface: Sometimes, refreshing the page or restarting the application can resolve temporary glitches.
  Consult Documentation: Refer to the SAP documentation or help resources for specific guidance on the operation you are trying to perform, as there may be additional requirements or steps.
  Contact Support: If the issue persists, consider reaching out to your SAP support team or consulting the SAP community for further assistance.
  
  Related Information:
  
  SAP Data Modeler: This tool is used for creating and managing data models in SAP systems. Understanding how to navigate and use this tool effectively can help prevent such errors.
  User Permissions: Ensure that you have the necessary permissions to access and modify the data models and entity types.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  
  By following these steps, you should be able to resolve the UD628 error and continue with your data modeling tasks in SAP.