How To Fix TRUST037 - Cannot import certificate response

SAP Error Message - Details

• Message type: E = Error

• Message class: TRUST - Certificate Management

• Message number: 037

• Message text: Cannot import certificate response

What causes this issue?

The certificate response could not be imported into the PSE. You either
selected an incorrect PSE (the certificate response can only be
imported into the PSE from which the certificate request was generated),
or the certificate response is incomplete.

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?

Check whether you selected the correct PSE to import the certificate
response. Then you can import the certificate response in the
following formats:
As a PKCS#7 package with complete certificate upward path. The
PKCS#7 package must be Base64-coded, and have the header line
<LB>-----BEGIN CERTIFICATE-----</> and the footer line
<LB>-----END CERTIFICATE-----</>.
Individual PEM-coded certificates (that is, Base64-coded with the
header line <LB>-----BEGIN CERTIFICATE-----</> and the footer line
<LB>-----END CERTIFICATE-----</>), if the associated root certificate
exists in the database. For an overview of the existing root
certificates, use the "Import Certificate" function.
As a file with multiple PEM-coded certificates. In this case, the
system automatically attempts to build a complete certificate upward
path; all certificates not required for this are ignored. If
certificates are missing (such as, if you are using an intermediate CA),
you can extend the certificate response with additional PEM-coded
certificates before the import.

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 TRUST037 - Cannot import certificate response ?

  The SAP error message TRUST037: Cannot import certificate response typically occurs when there is an issue with the import of a certificate response in the SAP Trust Manager (transaction code STRUST). This error can arise due to various reasons, including issues with the certificate itself, the format of the response, or the configuration of the trust relationship.
  Causes of TRUST037
  
  Invalid Certificate Format: The certificate response may not be in the expected format (e.g., PEM, DER).
  Corrupted Certificate: The certificate file may be corrupted or incomplete.
  Mismatched Key Pair: The certificate response may not match the private key that was used to generate the certificate signing request (CSR).
  Trust Store Issues: The trust store may not be properly configured or may not have the necessary permissions.
  Expired or Revoked Certificates: The certificate being imported may be expired or revoked.
  Incorrect Certificate Chain: The certificate chain may be incomplete or incorrect, leading to validation issues.
  
  Solutions
  
  
  Check Certificate Format: Ensure that the certificate response is in the correct format (usually PEM or DER). You can convert between formats using tools like OpenSSL if necessary.
  
  
  Validate the Certificate: Use tools like OpenSSL to check the validity of the certificate. You can run commands to verify the certificate chain and ensure that it is not expired or revoked.
  
  
  Match Key Pair: Ensure that the certificate response corresponds to the private key used to generate the CSR. You can check this by comparing the modulus of the private key and the certificate.
  
  
  Review Trust Store Configuration: Check the configuration of the trust store in SAP. Ensure that the necessary permissions are set and that the trust store is correctly configured to accept the certificate.
  
  
  Import Intermediate Certificates: If the certificate chain is incomplete, make sure to import any intermediate certificates that may be required for the chain to be valid.
  
  
  Use STRUST Transaction: Go to transaction STRUST in SAP, and try to import the certificate response again. Make sure to follow the steps correctly and check for any additional error messages that may provide more context.
  
  
  Check SAP Notes: Look for any relevant SAP Notes that may address this specific error. SAP frequently updates its knowledge base with solutions for common issues.
  
  
  Related Information
  
  Transaction STRUST: This is the transaction used to manage SSL certificates and trust relationships in SAP.
  OpenSSL: A widely used tool for managing SSL certificates, which can help in validating and converting certificate formats.
  SAP Security Guide: Refer to the SAP Security Guide for best practices on managing certificates and trust relationships.
  SAP Community: The SAP Community forums can be a valuable resource for finding solutions to specific error messages and issues.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance.