How To Fix OY003 - Customer packages must begin with Y or Z

SAP Error Message - Details

• Message type: E = Error

• Message class: OY - Customizing Basis

• Message number: 003

• Message text: Customer packages must begin with Y or Z

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message OY003 - Customer packages must begin with Y or Z ?

  The SAP error message OY003, which states "Customer packages must begin with Y or Z," typically occurs when you are trying to create or modify a package in the SAP system that does not adhere to the naming conventions for customer packages. In SAP, customer packages are required to start with the letters "Y" or "Z" to distinguish them from standard SAP packages.
  Cause:
  
  Incorrect Package Name: The package you are trying to create or modify does not start with "Y" or "Z".
  System Configuration: The system may have been configured to enforce this naming convention strictly.
  
  Solution:
  
  Rename the Package: If you are creating a new package, ensure that the name starts with "Y" or "Z". For example, instead of naming it MY_PACKAGE, you could name it Y_MY_PACKAGE or Z_MY_PACKAGE.
  Check Existing Packages: If you are modifying an existing package, ensure that the package name adheres to the naming convention. If it does not, you may need to create a new package with the correct naming convention and migrate your objects to the new package.
  Consult Documentation: Review SAP documentation or guidelines regarding package naming conventions to ensure compliance.
  
  Related Information:
  
  Package Naming Conventions: In SAP, standard packages (those delivered by SAP) typically do not start with "Y" or "Z", while customer packages (custom developments) must start with these letters to avoid conflicts with standard SAP objects.
  Transport Requests: When working with transport requests, ensure that the packages associated with the requests follow the naming conventions to avoid transport issues.
  Development Guidelines: It is a good practice to follow SAP's development guidelines and naming conventions to maintain clarity and organization in your SAP environment.
  
  If you continue to experience issues after following these steps, consider reaching out to your SAP Basis or development team for further assistance.