How To Fix UD820 - A data model has already been assigned to this component

SAP Error Message - Details

• Message type: E = Error

• Message class: UD - EDM - Enterprise Data Model

• Message number: 820

• Message text: A data model has already been assigned to this component

What causes this issue?

You wish to assign a data model to an application component.
However, this component already has a data model assigned to it.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Please check your selection and assign the data model to another
application component.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UD820 - A data model has already been assigned to this component ?

  The SAP error message UD820, which states "A data model has already been assigned to this component," typically occurs in the context of SAP's data modeling tools, particularly when working with the SAP BusinessObjects Data Services or SAP BW (Business Warehouse) environments. This error indicates that there is an attempt to assign a data model to a component that already has a data model assigned to it.
  
  Cause:
  
  Duplicate Assignment: The most common cause of this error is that the component (like a data flow, data store, or transformation) already has a data model associated with it, and you are trying to assign another one.
  
  Configuration Issues: There may be configuration issues or inconsistencies in the metadata that lead to this error.
  User Error: The user may not be aware that the component already has a data model assigned.
  
  
  Solution:
  
  Check Existing Assignments: Review the component in question to see if a data model is already