How To Fix MDG_OIF051 - Structure &1 : Underscore not permitted at 2nd or 3rd position

SAP Error Message - Details

• Message type: E = Error

• Message class: MDG_OIF - Message Class for Outbound Interface

• Message number: 051

• Message text: Structure &1 : Underscore not permitted at 2nd or 3rd position

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MDG_OIF051 - Structure &1 : Underscore not permitted at 2nd or 3rd position ?

  The SAP error message MDG_OIF051 indicates that there is an issue with the naming convention of a structure in the Master Data Governance (MDG) application. Specifically, the error states that an underscore (_) is not permitted at the 2nd or 3rd position of the structure name.
  Cause:
  This error typically arises when:
  
  A structure name is defined in a way that violates the naming conventions set by SAP. In this case, the structure name contains an underscore in the 2nd or 3rd position, which is not allowed.
  The naming conventions for structures in SAP are strict to ensure consistency and avoid potential conflicts or confusion in the system.
  
  Solution:
  To resolve this error, you should:
  
  Identify the Structure Name: Determine which structure is causing the error. The error message should provide the name of the structure (indicated by &1).
  Rename the Structure: Modify the structure name to comply with SAP's naming conventions. Ensure that there are no underscores in the 2nd or 3rd position. For example:
  
  If the structure name is A_BC, you could rename it to A1BC or AB_C (if the underscore is not in the 2nd or 3rd position).
  
  
  Check Other Naming Conventions: Ensure that the new name adheres to other SAP naming conventions, such as length and character restrictions.
  Test the Changes: After renaming the structure, test the changes in the system to ensure that the error is resolved and that the structure functions as intended.
  
  Related Information:
  
  SAP Naming Conventions: Familiarize yourself with SAP's naming conventions for objects, which can be found in the SAP documentation or help guides.
  MDG Documentation: Review the Master Data Governance documentation for any specific guidelines related to structure definitions and naming.
  Transport Requests: If you are working in a development environment, ensure that any changes made are included in a transport request for proper migration to other environments (e.g., QA, Production).
  
  If you continue to experience issues after making the changes, consider reaching out to your SAP support team or consulting the SAP community for further assistance.