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

RLB117 - Overview

• 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

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.

Unfortunately, there isn't any extra information in this error notice.

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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