How To Fix /PF1/MSG_CUST001 - Unknown error in method &1 of class &2

SAP Error Message - Details

• Message type: E = Error

• Message class: /PF1/MSG_CUST -

• Message number: 001

• Message text: Unknown error in method &1 of class &2

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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Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /PF1/MSG_CUST001 - Unknown error in method &1 of class &2 ?

  The SAP error message /PF1/MSG_CUST001 Unknown error in method &1 of class &2 typically indicates that there is an issue occurring within a custom class or method in the SAP system. This error is not very descriptive on its own, but it can be caused by various factors. Here’s a breakdown of potential causes, solutions, and related information:
  Causes:
  
  Custom Code Issues: The error is likely originating from custom ABAP code. There may be an unhandled exception or a logical error in the method specified in the error message.
  Data Issues: The input data being processed by the method may be invalid or not in the expected format, leading to runtime errors.
  Configuration Problems: There may be issues with the configuration settings that the method relies on, which could lead to unexpected behavior.
  System Environment: Changes in the system environment, such as updates or patches, may have affected the behavior of the custom code.
  
  Solutions:
  
  Debugging: Use the ABAP debugger to step through the code in the specified method to identify where the error occurs. Look for unhandled exceptions or logical errors.
  Check Logs: Review the application logs (transaction SLG1) for any additional error messages or warnings that may provide more context about the issue.
  Review Input Data: Validate the input data being passed to the method to ensure it meets the expected criteria.
  Code Review: Conduct a thorough review of the custom code in the specified class and method to identify any potential issues or areas for improvement.
  Consult Documentation: If the method is part of a third-party or custom solution, consult the relevant documentation for any known issues or updates.
  Testing: If changes were made recently, consider rolling back those changes or testing in a development environment to isolate the issue.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SE80 (Object Navigator) or SE37 (Function Module) to locate the class and method in question.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address similar issues or provide patches.
  Community Forums: Engage with the SAP Community or forums like SAP Community Network (SCN) for insights from other users who may have encountered similar issues.
  
  Conclusion:
  The error message /PF1/MSG_CUST001 indicates a problem in a custom method, and resolving it typically involves debugging the code, checking input data, and reviewing logs. If the issue persists, consider reaching out to SAP support or consulting with a developer familiar with the custom code in your system.