How To Fix MDC_MODEL003 - Mark one table as ROOT TABLE for each BO Type

SAP Error Message - Details

• Message type: E = Error

• Message class: MDC_MODEL - Messages In Context Of MDC Model

• Message number: 003

• Message text: Mark one table as ROOT TABLE for each BO Type

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MDC_MODEL003 - Mark one table as ROOT TABLE for each BO Type ?

  The SAP error message MDC_MODEL003, which states "Mark one table as ROOT TABLE for each BO Type," typically occurs in the context of SAP HANA modeling, particularly when working with Business Object (BO) types in the SAP HANA Studio or SAP Web IDE for SAP HANA.
  Cause:
  This error arises when you are trying to create or modify a calculation view or a graphical view that involves multiple tables, but you have not designated a root table for each Business Object type. In SAP HANA, a root table is essential because it serves as the primary source of data for the view, and it establishes the hierarchy and relationships between the tables involved in the model.
  Solution:
  To resolve the MDC_MODEL003 error, follow these steps:
  
  
  Identify the Business Object Types: Determine the different Business Object types you are working with in your calculation view.
  
  
  Select a Root Table: For each Business Object type, you need to select one table to act as the root table. This is typically the main table that contains the primary data for that object type.
  
  
  Mark the Root Table:
  
  In the graphical view editor, right-click on the table you want to set as the root table.
  Select the option to mark it as the root table. This is usually done by selecting "Set as Root" or a similar option in the context menu.
  
  
  
  Check Relationships: Ensure that the relationships between the root table and other tables are correctly defined. This includes setting up joins and ensuring that the cardinality is appropriate.
  
  
  Save and Activate: After marking the root tables and ensuring that all relationships are correctly set, save your changes and activate the view.
  
  
  Test the View: Once activated, test the view to ensure that it works as expected without any errors.
  
  
  Related Information:
  
  Root Table Definition: In SAP HANA, a root table is the primary table in a calculation view that serves as the starting point for data retrieval. It is essential for defining the structure and relationships of the data model.
  Business Object Types: These are typically entities that represent business concepts, such as customers, orders, products, etc. Each type may have its own set of attributes and relationships with other types.
  SAP HANA Studio/Web IDE: These are the development environments used for creating and managing HANA models, including calculation views and other database objects.
  
  If you continue to experience issues after following these steps, consider reviewing the documentation for SAP HANA modeling or seeking assistance from SAP support or community forums for more specific guidance related to your scenario.