How To Fix /SCMTMS/DG026 - Unique field mapping for field &1 is not possible; see long text

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCMTMS/DG -

• Message number: 026

• Message text: Unique field mapping for field &1 is not possible; see long text

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 /SCMTMS/DG026 - Unique field mapping for field &1 is not possible; see long text ?

  The SAP error message /SCMTMS/DG026 Unique field mapping for field &1 is not possible; see long text typically occurs in the context of SAP Transportation Management (TM) when there is an issue with the mapping of fields in the data transfer process, particularly when trying to establish a unique mapping for a specific field.
  Cause:
  
  Field Mapping Issues: The error indicates that the system is unable to create a unique mapping for the specified field (denoted by &1). This can happen if the field in question is not unique in the source data or if there are multiple entries that could correspond to the same target field.
  Data Inconsistencies: There may be inconsistencies or duplicates in the data being processed, which prevents the system from establishing a clear one-to-one relationship.
  Configuration Errors: Incorrect configuration in the mapping settings or in the data transfer process can lead to this error.
  
  Solution:
  
  Check Data for Duplicates: Review the source data for duplicates or inconsistencies related to the field specified in the error message. Ensure that the data is clean and that each entry is unique where required.
  Review Mapping Configuration: Go to the configuration settings for the data transfer process and verify the mapping for the field in question. Ensure that the mapping is set up correctly and that it aligns with the expected data structure.
  Adjust Field Settings: If necessary, adjust the settings for the field in the mapping configuration to allow for a non-unique mapping if that is acceptable for your business process.
  Consult Long Text: The error message suggests checking the long text for more details. This long text may provide additional context or specific instructions on how to resolve the issue.
  Testing: After making adjustments, perform tests to ensure that the mapping works as expected and that the error does not reoccur.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Refer to the official SAP documentation for Transportation Management to understand the data mapping process and best practices.
  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, it may be beneficial to consult with an SAP expert or your organization's SAP support team for further assistance.