How To Fix VT544 - Access sequences defined by the user must begin with Y or Z

SAP Error Message - Details

• Message type: E = Error

• Message class: VT - Vertriebstabellen

• Message number: 544

• Message text: Access sequences defined by the user 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 VT544 - Access sequences defined by the user must begin with Y or Z ?

  The SAP error message VT544 indicates that there is an issue with the access sequence defined in the system. Specifically, it states that access sequences defined by the user must begin with the letters "Y" or "Z". This is a standard SAP requirement to differentiate between standard access sequences (which typically do not start with these letters) and custom access sequences (which should start with "Y" or "Z").
  Cause:
  The error occurs when:
  
  A user-defined access sequence is created or modified, but it does not start with "Y" or "Z".
  The system is trying to use an access sequence that does not comply with this naming convention.
  
  Solution:
  To resolve this error, you need to ensure that any custom access sequences you create or modify adhere to the naming convention. Here are the steps to fix the issue:
  
  
  Identify the Access Sequence: Determine which access sequence is causing the error. This can usually be found in the configuration settings where the error is triggered.
  
  
  Modify the Access Sequence Name:
  
  Go to the transaction code V/07 (for access sequences).
  Find the access sequence that is causing the issue.
  If it does not start with "Y" or "Z", rename it to start with one of these letters.
  Save your changes.
  
  
  
  Check Related Configuration: Ensure that any related configurations (like condition types or pricing procedures) that reference this access sequence are also updated if necessary.
  
  
  Test the Changes: After making the changes, test the relevant transaction or process to ensure that the error no longer occurs.
  
  
  Related Information:
  
  Access Sequences: Access sequences are used in SAP to determine the order in which the system searches for valid condition records. They are crucial for pricing, discounts, and other condition-based functionalities.
  Standard vs. Custom: Standard access sequences are provided by SAP and are typically used for common scenarios. Custom access sequences are created by users to meet specific business requirements.
  Naming Convention: The naming convention helps maintain clarity and organization within the system, making it easier to identify custom configurations.
  
  If you continue to experience issues after following these steps, it may be helpful to consult with your SAP Basis or functional team for further assistance.