How To Fix RLB117 - Libraries in the customer's system must begin with Y or Z

SAP Error Message - Details

• Message type: E = Error

• Message class: RLB - Reuse Library

• Message number: 117

• Message text: Libraries in the customer's system must begin with Y or Z

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RLB117 - Libraries in the customer's system must begin with Y or Z ?

  The SAP error message RLB117 indicates that the libraries in the customer's system must begin with the letters "Y" or "Z". This is a common restriction in SAP systems, particularly in the context of ABAP development and transport management. The reason for this restriction is to ensure that custom developments and objects do not interfere with standard SAP objects, which typically reside in libraries that do not start with these letters.
  Cause:
  
  Naming Convention: SAP enforces a naming convention where custom objects (like programs, function modules, classes, etc.) should be created in namespaces that start with "Y" or "Z". This helps in distinguishing custom developments from standard SAP objects.
  Transport Management: When transporting objects between systems (like from development to quality assurance or production), the system checks the naming convention to ensure compliance.
  
  Solution:
  To resolve the RLB117 error, you can take the following steps:
  
  
  Check Object Names: Review the names of the libraries or objects you are trying to create or transport. Ensure that they start with "Y" or "Z".
  
  
  Rename Objects: If you find any objects that do not comply with this naming convention, rename them to start with "Y" or "Z". This can usually be done in the ABAP Workbench (SE80) or the relevant transaction.
  
  
  Create New Objects: If you are creating new objects, make sure to follow the naming convention from the outset.
  
  
  Transport Requests: If the error occurs during a transport request, ensure that all objects included in the transport request adhere to the naming convention.
  
  
  Consult Documentation: Refer to SAP documentation or guidelines regarding naming conventions for custom developments to ensure compliance.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific guidance or updates related to this error message. SAP frequently updates its knowledge base with solutions to common issues.
  Development Guidelines: Familiarize yourself with SAP's development guidelines, which outline best practices for naming conventions and object management.
  Namespace Management: If your organization has a specific namespace assigned by SAP, ensure that you are using it correctly. Custom developments can be created in a designated namespace that may not necessarily start with "Y" or "Z", but this is less common.
  
  By following these steps, you should be able to resolve the RLB117 error and ensure that your SAP system adheres to the required naming conventions.