How To Fix SOS_MAPPING139 - This persistence mapping allows only one field assignment

SAP Error Message - Details

• Message type: E = Error

• Message class: SOS_MAPPING - Object Services: Persistence Mapping for Messages

• Message number: 139

• Message text: This persistence mapping allows only one field assignment

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SOS_MAPPING139 - This persistence mapping allows only one field assignment ?

  The SAP error message SOS_MAPPING139 indicates that there is an issue with the persistence mapping in your SAP system, specifically that the mapping allows only one field assignment, but multiple assignments have been attempted. This typically occurs in the context of data modeling or when working with persistence layers in SAP applications, such as when using ABAP or SAP HANA.
  Cause:
  
  Multiple Field Assignments: The error arises when you try to map more than one source field to a single target field in a persistence mapping. This is not allowed as each target field can only be assigned a value from one source field.
  Incorrect Mapping Configuration: The mapping configuration may have been set up incorrectly, leading to multiple assignments for a single target field.
  Data Model Design Issues: There may be issues in the design of the data model that lead to conflicts in field assignments.
  
  Solution:
  
  Review the Mapping Configuration: Check the mapping configuration in the relevant data model or persistence layer. Ensure that each target field is only assigned a value from one source field.
  Adjust Field Assignments: If you find that multiple source fields are being assigned to a single target field, you will need to adjust the mapping to ensure that only one source field is assigned to each target field.
  Consult Documentation: Refer to the SAP documentation for the specific module or technology you are using to understand the correct mapping practices.
  Testing: After making changes, test the mapping to ensure that the error is resolved and that data is being persisted correctly.
  
  Related Information:
  
  SAP Notes and Knowledge Base Articles: Check SAP Notes for any known issues or patches related to SOS_MAPPING139. SAP's support portal may have additional insights or solutions.
  Data Modeling Best Practices: Familiarize yourself with best practices for data modeling in SAP, especially regarding persistence mappings.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  If the problem persists after following these steps, consider reaching out to SAP support for further assistance.