How To Fix PU801 - Invalid file access mode "&"

PU801 - Overview

• Message type: E = Error

• Message class: PU - Upgrade and Transport Log Messages

• Message number: 801

• Message text: Invalid file access mode "&"

What causes this issue?

A function module (from function group STRF) was called with invalid
value &V1& for the parameter ACCESS.

System Response

Execution of the program was terminated at this point.

How to fix this error?

Contact your SAP system administrator.

Error message extract from SAP system. Copyright SAP SE.

PU801 - Details

• The SAP error message PU801 "Invalid file access mode '&'" typically occurs when there is an issue with the file access mode specified in a program or configuration. This error is often related to file handling in ABAP programs, particularly when dealing with file operations such as opening, reading, or writing files.
  
  Cause:
  
  Invalid Access Mode: The error is triggered when an invalid or unsupported file access mode is specified. Common access modes include 'I' for input, 'O' for output, and 'A' for append. If a mode other than these is used, or if the mode is misspelled, the error will occur.
  
  Configuration Issues: There may be issues in the configuration of the file handling settings in the SAP system.
  Programmatic Errors: The ABAP code may contain logical errors where the file access mode is dynamically set or incorrectly defined.
  
  
  Solution:
  
  Check Access Mode: Review the ABAP code where the file access mode is specified. Ensure