How To Fix UD345 - Entity type & is assigned to more than one object type.

SAP Error Message - Details

• Message type: E = Error

• Message class: UD - EDM - Enterprise Data Model

• Message number: 345

• Message text: Entity type & is assigned to more than one object type.

What causes this issue?

You want to change from an entity type to the corresponding object type.
This is not possible because the entity type is assigned to more than
one object type.

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?

Make an unique assignment.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UD345 - Entity type & is assigned to more than one object type. ?

  The SAP error message UD345 indicates that an entity type is assigned to more than one object type, which is not allowed in the context of the data model in SAP. This typically occurs in the context of SAP's data modeling tools, such as the SAP Business Application Studio or SAP HANA modeling.
  Cause:
  The error arises when:
  
  An entity type (which represents a data structure) is incorrectly configured to be associated with multiple object types (which represent different business entities or processes).
  There may be a misconfiguration in the data model where the same entity type is being reused inappropriately across different contexts or object types.
  
  Solution:
  To resolve the UD345 error, you can follow these steps:
  
  
  Review the Data Model:
  
  Check the data model to identify where the entity type is being used.
  Ensure that each entity type is uniquely assigned to a single object type.
  
  
  
  Modify Assignments:
  
  If the entity type is indeed assigned to multiple object types, you will need to decide which assignment is correct based on your business requirements.
  Remove or reassign the entity type from the incorrect object type.
  
  
  
  Check for Duplicates:
  
  Ensure that there are no duplicate definitions of the entity type in the model.
  If necessary, create a new entity type for the additional object type instead of reusing the existing one.
  
  
  
  Validate the Model:
  
  After making changes, validate the data model to ensure that there are no further errors.
  Test the model to confirm that it behaves as expected.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidelines on data modeling and entity type assignments.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error.
  Data Modeling Best Practices: Familiarize yourself with best practices for data modeling in SAP to avoid similar issues in the future.
  Community Forums: Engage with SAP community forums or support channels for additional insights and solutions from other users who may have encountered the same issue.
  
  By following these steps, you should be able to resolve the UD345 error and ensure that your data model is correctly configured.