How To Fix PAK140 - Structure package name or main package name must start with A-S or U-X

SAP Error Message - Details

• Message type: E = Error

• Message class: PAK - Package API / Package Tools

• Message number: 140

• Message text: Structure package name or main package name must start with A-S or U-X

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message PAK140 - Structure package name or main package name must start with A-S or U-X ?

  The SAP error message PAK140 indicates that there is an issue with the naming convention of a structure package or main package in the SAP system. Specifically, the error states that the package name must start with letters A-S or U-X. This is a restriction in SAP to ensure that package names adhere to a specific naming convention, which helps in organizing and managing packages effectively.
  Cause:
  
  Invalid Package Name: The package name you are trying to create or use does not start with the allowed characters (A-S or U-X).
  Naming Convention Violation: The naming conventions in SAP are designed to prevent conflicts with standard SAP packages and to maintain a structured hierarchy.
  
  Solution:
  
  Rename the Package: If you are creating a new package, ensure that the name starts with one of the allowed characters (A-S or U-X). For example, you could rename your package to start with 'A', 'B', 'C', etc., or 'U', 'V', 'W', etc.
  Check Existing Packages: If you are trying to use an existing package, verify that its name complies with the naming conventions. If it does not, you may need to create a new package with a valid name.
  Consult Documentation: Refer to SAP documentation or guidelines regarding package naming conventions to ensure compliance.
  
  Related Information:
  
  SAP Package Naming Conventions: SAP has specific guidelines for naming packages to avoid conflicts with standard packages and to maintain a clear structure. Typically, customer packages should start with letters A-S or U-X, while SAP standard packages start with letters T-Z.
  Transaction Codes: You can use transaction codes like SE80 (Object Navigator) to manage packages and check their properties.
  Development Guidelines: Always follow SAP's development guidelines and best practices when creating or modifying packages to avoid issues like this in the future.
  
  By adhering to these naming conventions, you can avoid the PAK140 error and ensure that your package management in SAP is organized and compliant with system requirements.