How To Fix UD163 - Conversion of entity type & from & to & ambiguous

SAP Error Message - Details

• Message type: E = Error

• Message class: UD - EDM - Enterprise Data Model

• Message number: 163

• Message text: Conversion of entity type & from & to & ambiguous

What causes this issue?

The conversion of the old attributes in the new fields
is ambiguous. The old attributes contain
contradictory entries.

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?

The conversion has made a proposal. Check in the Data Modeler after the
Put that the attributes of the specified entity type
(field A) are as you want them.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UD163 - Conversion of entity type & from & to & ambiguous ?

  The SAP error message UD163, which states "Conversion of entity type & from & to & ambiguous," typically occurs in the context of data conversion or transformation processes within SAP systems, particularly when dealing with entity types in data models or data migration scenarios.
  Cause:
  The error is generally caused by one of the following issues:
  
  
  Ambiguous Mapping: There may be multiple mappings or definitions for the same entity type in the source and target systems, leading to confusion about which mapping to use for conversion.
  
  
  Inconsistent Data Models: The data models in the source and target systems may not align properly, causing ambiguity in how data should be converted.
  
  
  Duplicate Definitions: There could be duplicate definitions of the entity type in the system, which confuses the conversion logic.
  
  
  Configuration Issues: Incorrect configuration settings in the data conversion or migration tools can lead to this error.
  
  
  Solution:
  To resolve the UD163 error, you can take the following steps:
  
  
  Check Entity Definitions: Review the definitions of the entity types involved in the conversion. Ensure that there are no duplicate or conflicting definitions.
  
  
  Review Mapping Configurations: Examine the mapping configurations for the data conversion process. Ensure that each entity type is mapped clearly and unambiguously.
  
  
  Align Data Models: Make sure that the data models in both the source and target systems are aligned. If there are discrepancies, you may need to adjust the models to ensure compatibility.
  
  
  Use Unique Identifiers: If possible, use unique identifiers for entity types to avoid ambiguity during the conversion process.
  
  
  Consult Documentation: Refer to SAP documentation or guides related to the specific data conversion or migration tool you are using. There may be specific recommendations or best practices for handling entity types.
  
  
  Debugging: If the issue persists, consider enabling debugging or logging features in the SAP system to gather more information about the conversion process and identify the source of the ambiguity.
  
  
  Seek Support: If you are unable to resolve the issue, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance based on your specific scenario.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  Data Migration Tools: Familiarize yourself with the data migration tools available in SAP, such as SAP Data Services or SAP S/4HANA Migration Cockpit, as they may have specific features or settings that can help mitigate this error.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify and resolve the cause of the UD163 error in your SAP system.