How To Fix ACM_SYNTAX156 - Statement "REDEFINITION" is only allowed in customer systems

SAP Error Message - Details

• Message type: E = Error

• Message class: ACM_SYNTAX - ACM: DCL Syntax Error Messages

• Message number: 156

• Message text: Statement "REDEFINITION" is only allowed in customer systems

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ACM_SYNTAX156 - Statement "REDEFINITION" is only allowed in customer systems ?

  The SAP error message ACM_SYNTAX156, which states that the statement "REDEFINITION" is only allowed in customer systems, typically occurs in the context of ABAP programming when a developer attempts to use the REDEFINITION statement in a non-customer namespace or in a way that is not permitted by the system.
  Cause:
  
  Namespace Restrictions: The REDEFINITION statement is intended for use in customer namespaces (e.g., Z or Y namespaces). If you are trying to use it in a standard SAP namespace (e.g., A*), the system will throw this error.
  Incorrect Usage: The REDEFINITION statement may be used incorrectly or in an inappropriate context, such as outside of a class or interface where it is not allowed.
  System Configuration: The system may be configured in a way that restricts certain operations to customer-defined objects only.
  
  Solution:
  
  Check Namespace: Ensure that you are working within a customer namespace. If you are in a standard namespace, you will need to move your code to a Z or Y namespace.
  Review Code Context: Make sure that the REDEFINITION statement is being used in the correct context, such as within a class or interface definition where it is allowed.
  Consult Documentation: Refer to the SAP documentation for the REDEFINITION statement to understand its proper usage and any restrictions that may apply.
  Use Alternative Approaches: If you cannot use REDEFINITION due to namespace restrictions, consider alternative programming techniques that achieve the same goal without using this statement.
  
  Related Information:
  
  ABAP Documentation: Review the official SAP ABAP documentation for detailed information on the REDEFINITION statement and its intended use.
  SAP Notes: Check for any relevant SAP Notes that may address this error or provide additional context or solutions.
  Community Forums: Engage with the SAP community through forums or discussion boards to see if others have encountered and resolved similar issues.
  
  If you continue to face challenges, consider reaching out to your SAP support team or a qualified ABAP developer for further assistance.