How To Fix SAML2107 - Cannot convert certificate from base64 to binary

SAP Error Message - Details

• Message type: E = Error

• Message class: SAML2 - SAML2 Nachrichten

• Message number: 107

• Message text: Cannot convert certificate from base64 to binary

Self-Explanatory Message

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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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SAML2107 - Cannot convert certificate from base64 to binary ?

  The SAP error message SAML2107 indicates that there is an issue with converting a certificate from Base64 format to binary format. This error typically arises in the context of Single Sign-On (SSO) configurations, particularly when dealing with SAML (Security Assertion Markup Language) assertions and certificates.
  Cause
  The error can be caused by several factors, including:
  
  
  Malformed Certificate: The Base64 encoded certificate may be incorrectly formatted. This can happen if there are extra spaces, line breaks, or missing headers/footers.
  
  
  Incorrect Certificate Type: The certificate being used may not be a valid X.509 certificate or may not be in the expected format.
  
  
  Encoding Issues: The certificate might not be properly encoded in Base64, leading to conversion failures.
  
  
  Configuration Errors: There may be issues in the configuration settings where the certificate is being referenced, such as incorrect paths or parameters.
  
  
  Solution
  To resolve the SAML2107 error, you can follow these steps:
  
  
  Check Certificate Format:
  
  Ensure that the certificate is in the correct Base64 format. A valid X.509 certificate should look like this:
  -----BEGIN CERTIFICATE-----
  [Base64 encoded data]
  -----END CERTIFICATE-----
  
  Make sure there are no extra spaces or line breaks within the Base64 encoded data.
  
  
  
  Re-encode the Certificate:
  
  If you suspect the certificate is malformed, try re-encoding it. You can use tools like OpenSSL to convert the certificate to the correct format:
  openssl x509 -in your_certificate.pem -outform DER -out your_certificate.der
  
  
  
  
  Validate the Certificate:
  
  Use tools to validate the certificate to ensure it is not expired and is correctly signed.
  
  
  
  Check Configuration:
  
  Review the SSO configuration in SAP to ensure that the certificate is correctly referenced. Check for any typos or incorrect paths.
  
  
  
  Test with a Different Certificate:
  
  If possible, test with a different certificate to see if the issue persists. This can help determine if the problem is with the specific certificate or the configuration.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or support resources for specific guidance related to your version of SAP and the SSO configuration.
  
  
  
  Related Information
  
  SAP Notes: Check SAP Notes related to SSO and SAML for any known issues or patches that might address this error.
  Logs: Review the SAP application logs for additional context or error messages that may provide more insight into the issue.
  Community Forums: Engage with SAP community forums or support channels for additional help and shared experiences from other users.
  
  By following these steps, you should be able to identify and resolve the cause of the SAML2107 error in your SAP environment.