How To Fix SAML2138 - Validation of temporary PSE filename '&1' failed

SAP Error Message - Details

• Message type: E = Error

• Message class: SAML2 - SAML2 Nachrichten

• Message number: 138

• Message text: Validation of temporary PSE filename '&1' failed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SAML2138 - Validation of temporary PSE filename '&1' failed ?

  The SAP error message SAML2138, which states "Validation of temporary PSE filename '&1' failed," typically occurs during the process of creating or managing a Personal Security Environment (PSE) in SAP systems. This error is related to the handling of the PSE files, which are crucial for secure communication in SAP systems, particularly when using SSL or SAML.
  Cause:
  The error can be caused by several factors, including:
  
  Invalid Filename: The temporary PSE filename specified may not conform to the expected naming conventions or may contain invalid characters.
  File System Issues: There may be issues with the file system where the PSE is being created, such as insufficient permissions, lack of space, or file system corruption.
  Configuration Issues: Incorrect configuration settings in the SAP system related to the PSE or the security settings may lead to this error.
  Temporary Directory Issues: The directory where the temporary PSE is being created may not exist or may not be writable.
  
  Solution:
  To resolve the SAML2138 error, you can take the following steps:
  
  Check Filename: Ensure that the temporary PSE filename does not contain any invalid characters and follows the naming conventions expected by SAP.
  Verify Permissions: Check the permissions of the directory where the PSE is being created. Ensure that the user running the SAP instance has the necessary permissions to create files in that directory.
  Check Disk Space: Ensure that there is sufficient disk space available on the file system where the PSE is being created.
  Review Configuration: Review the configuration settings related to the PSE in the SAP system. Ensure that all settings are correct and that the paths specified for the PSE are valid.
  Temporary Directory: Verify that the temporary directory specified in the SAP profile parameters (like DIR_TEMP) exists and is writable.
  Restart SAP Services: Sometimes, restarting the SAP services can help resolve temporary issues related to file handling.
  
  Related Information:
  
  PSE Management: PSEs are managed through transaction codes like STRUST (for SSL PSE) and STRUSTSSO2 (for SSO PSE). Familiarize yourself with these transactions for managing PSEs.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps. You can search the SAP Support Portal for notes related to SAML2138.
  Logs: Review the system logs (transaction SM21) and developer traces (transaction ST22) for any additional error messages or warnings that may provide more context about the issue.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance.