How To Fix W_CB123 - Internal error occurred in class &1

SAP Error Message - Details

• Message type: E = Error

• Message class: W_CB -

• Message number: 123

• Message text: Internal error occurred in class &1

What causes this issue?

An internal error occurred

System Response

Processing was terminated

How to fix this error?

Inform your system administrator

Procedure for System Administrators

Contact SAP
Information for SAP:
The error occurred in class &V1&, method &V2& at point &V3&.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message W_CB123 - Internal error occurred in class &1 ?

  The SAP error message:
  W_CB123 Internal error occurred in class &1
  is a generic internal error message indicating that an unexpected or unhandled exception occurred within a specific ABAP class during runtime. The placeholder &1 is replaced by the name of the class where the error happened.
  
  Cause
  
  Internal runtime error: The error is raised when the program encounters an unexpected condition or exception inside the specified ABAP class.
  Programming or system issue: It could be due to a bug in the SAP standard code or a custom enhancement, incorrect data, missing authorizations, or inconsistencies in the system.
  Data inconsistencies or missing prerequisites: Sometimes, the error occurs because the data being processed does not meet the expected criteria or some prerequisite setup is missing.
  System or kernel issues: Less commonly, it could be due to system-level problems such as memory issues or kernel bugs.
  
  
  Solution
  
  
  Check the exact class name: Identify the class name from the message (the &1 parameter). This helps narrow down where the error occurred.
  
  
  Analyze the short dump (ST22):
  
  Go to transaction ST22 (ABAP Runtime Errors).
  Look for the short dump generated at the time of the error.
  The dump will provide detailed information about the error, including the exact line of code, call stack, and exception details.
  
  
  
  Review the code or logic in the class:
  
  If it is a custom class or enhancement, debug the code to find the root cause.
  If it is a standard SAP class, check SAP Notes for known issues related to that class.
  
  
  
  Check for OSS Notes:
  
  Search the SAP Support Portal for OSS Notes referencing the class name or the error message W_CB123.
  SAP Notes may provide patches, corrections, or workarounds.
  
  
  
  Verify data and configuration:
  
  Ensure that the data being processed is consistent and meets the expected format.
  Check related configuration or master data that the class might depend on.
  
  
  
  Debugging:
  
  If you have development access, set breakpoints in the class and reproduce the error to understand the cause.
  
  
  
  Contact SAP Support:
  
  If the issue persists and no relevant OSS Notes are found, raise a support ticket with SAP, providing the short dump and system details.
  
  
  
  
  Related Information
  
  Transaction ST22: For analyzing runtime errors and dumps.
  Transaction SE24: To display and analyze the ABAP class mentioned.
  SAP Notes and Knowledge Base Articles: Search by class name or error message.
  Debugging tools: Use ABAP debugger to trace the error.
  Common scenarios: This error often appears in modules like FI, CO, SD, or custom developments when unexpected conditions occur.
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  W_CB123 Internal error in class &1
  
  
  Cause
  Unexpected internal exception in ABAP class (bug, data issue, config problem)
  
  
  Solution
  Analyze ST22 dump, debug class, check data/config, search OSS Notes, contact SAP if needed
  
  
  
  
  If you provide the exact class name or the context in which the error occurs, I can help you further with more specific guidance.