How To Fix STRUSTCR041 - Kernel cannot parse CRL; check CRL format

SAP Error Message - Details

• Message type: E = Error

• Message class: STRUSTCR - Certificate Revocation Configuration

• Message number: 041

• Message text: Kernel cannot parse CRL; check CRL format

What causes this issue?

The kernel was not able to parse the CRL. The system has already
downloaded the CRL and checked the signature. The CRL is either ill
formed or uses a format not supported by the certificate revocation
check.

System Response

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

How to fix this error?

Ensure that the CRL uses a well-formed standard format.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message STRUSTCR041 - Kernel cannot parse CRL; check CRL format ?

  The SAP error message STRUSTCR041 indicates that the SAP system is unable to parse the Certificate Revocation List (CRL) due to an issue with its format. This error typically arises when the CRL file is either corrupted, improperly formatted, or not in the expected format that the SAP kernel can understand.
  Causes:
  
  Corrupted CRL File: The CRL file may be damaged or incomplete.
  Incorrect Format: The CRL might not be in the expected PEM or DER format.
  File Encoding Issues: The CRL file may have been saved with an incorrect encoding.
  Version Incompatibility: The CRL may be generated by a different version of the software that is not compatible with the SAP kernel.
  Network Issues: If the CRL is being fetched from a remote location, network issues may prevent proper retrieval.
  
  Solutions:
  
  
  Verify CRL Format:
  
  Ensure that the CRL file is in the correct format (usually PEM or DER).
  You can use tools like OpenSSL to check the format of the CRL:
  openssl crl -in crl_file.crl -text -noout
  
  If the CRL is in DER format, convert it to PEM format using:
  openssl crl -inform DER -in crl_file.crl -out crl_file.pem
  
  
  
  
  Replace the CRL:
  
  If the CRL file is corrupted, obtain a fresh copy from the Certificate Authority (CA) that issued the certificates.
  
  
  
  Check Encoding:
  
  Ensure that the CRL file is saved with the correct encoding (UTF-8 without BOM is usually preferred).
  
  
  
  Update SAP Kernel:
  
  If the issue persists, consider updating the SAP kernel to the latest version, as there may be bug fixes or improvements related to CRL handling.
  
  
  
  Network Configuration:
  
  If the CRL is being fetched from a remote server, check network configurations and ensure that the SAP system can access the CRL URL.
  
  
  
  Consult Documentation:
  
  Refer to SAP Notes and documentation related to STRUST and CRL handling for any specific recommendations or updates.
  
  
  
  Related Information:
  
  SAP Transaction STRUST: This transaction is used for managing SSL certificates and trust relationships in SAP systems. You can use it to import, export, and manage certificates and CRLs.
  OpenSSL: A widely used tool for handling SSL/TLS certificates, which can be useful for checking and converting CRL formats.
  SAP Notes: Check for relevant SAP Notes in the SAP Support Portal that may address specific issues related to CRL parsing.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance.