How To Fix GW077 - File name is invalid

SAP Error Message - Details

• Message type: E = Error

• Message class: GW - Message Texts for Gateway

• Message number: 077

• Message text: File name is invalid

What causes this issue?

The specified file name is not permitted because it points to a
directory that is outside the valid directory tree or because it con
tains invalid characters.
If only one file name is specified, the file is created in the working
directory of the ABAP application server.
Valid directories are:
<(><<)>DIR_INSTANCE>/work
<(><<)>DIR_INSTANCE>/log
<(><<)>DIR/INSTANCE>/data

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GW077 - File name is invalid ?

  The SAP error message GW077, which states "File name is invalid," typically occurs when there is an issue with the file name or path specified in a file operation, such as when trying to upload or download files in the SAP system. Here are some common causes, solutions, and related information for this error:
  Causes:
  
  Invalid Characters: The file name may contain invalid characters that are not allowed in the file system (e.g., special characters, spaces, etc.).
  Path Length: The file path may exceed the maximum length allowed by the operating system or SAP.
  File Name Format: The file name may not conform to the expected format (e.g., missing file extension).
  Access Rights: The user may not have the necessary permissions to access the specified file or directory.
  File System Issues: There may be issues with the underlying file system, such as corruption or unavailability of the directory.
  
  Solutions:
  
  Check File Name: Ensure that the file name does not contain any invalid characters. Stick to alphanumeric characters, underscores, and hyphens.
  Shorten Path: If the file path is too long, try to shorten it by using a directory structure that is less deep or renaming folders.
  Correct Format: Make sure the file name includes the appropriate file extension (e.g., .txt, .csv).
  Permissions: Verify that the user has the necessary permissions to access the file or directory. This may involve checking user roles and authorizations in SAP.
  File System Check: If the issue persists, check the underlying file system for any issues. This may involve checking disk space, file system integrity, or network issues if accessing a remote file system.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error. SAP frequently updates its knowledge base with solutions to common problems.
  Transaction Codes: Use transaction codes like AL11 to check the directories and files available in the SAP system.
  Debugging: If you have access to debugging tools, you can trace the program or function module that is generating the error to get more context on the issue.
  Consult Documentation: Review the SAP documentation for the specific module or function you are working with to ensure you are following the correct procedures for file handling.
  
  If the problem persists after trying these solutions, it may be beneficial to consult with your SAP Basis team or SAP support for further assistance.