How To Fix DMC_DTL125 - Try to setup relationship with non-key field &1

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_DTL - Messages for DMC data transfer layer

• Message number: 125

• Message text: Try to setup relationship with non-key field &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMC_DTL125 - Try to setup relationship with non-key field &1 ?

  The SAP error message DMC_DTL125, which states "Try to setup relationship with non-key field &1," typically occurs in the context of Data Management and Data Integration processes, particularly when working with Data Migration Cockpit (DMC) or similar tools. This error indicates that there is an attempt to establish a relationship between data entities using a field that is not defined as a key field in the relevant data model.
  Cause:
  
  Non-Key Field Usage: The error arises when a relationship is being defined using a field that is not designated as a key field in the data model. Key fields are essential for uniquely identifying records in a table or dataset.
  Data Model Configuration: The data model may not be correctly configured to allow relationships based on the specified field.
  Mapping Issues: There may be issues in the mapping configuration where a non-key field is mistakenly used to establish a relationship.
  
  Solution:
  
  Check Data Model: Review the data model configuration to ensure that the field you are trying to use for the relationship is defined as a key field. If it is not, consider whether it should be or if you need to use a different field that is a key.
  Modify Relationships: If the field cannot be changed to a key field, you will need to modify the relationship setup to use a valid key field instead.
  Review Mapping Configuration: Go through the mapping configuration to ensure that the correct fields are being used for relationships. Adjust the mappings as necessary to align with the key fields defined in the data model.
  Consult Documentation: Refer to SAP documentation or guides related to the Data Migration Cockpit or the specific data model you are working with for additional insights and best practices.
  
  Related Information:
  
  Data Migration Cockpit (DMC): This tool is used for migrating data into SAP systems. Understanding its configuration and how relationships are established is crucial.
  Key Fields: In SAP, key fields are critical for ensuring data integrity and uniqueness. Familiarize yourself with how key fields are defined in your specific data model.
  SAP Notes and Community: Check SAP Notes for any known issues or updates related to this error. The SAP Community forums can also be a valuable resource for troubleshooting and solutions shared by other users.
  
  If the issue persists after following these steps, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.