Certificate response does not match PSE

What causes this issue?

The public key of the certificate response does not match the PSE. There
are two possible reasons for this happening. Either you created the
certificate request from another PSE. Or you have regenerated the PSE
after creating the certificate request (in Trust Manager: choose
Generate PSE or Replace PSE). Even if you regenerate a PSE with the same
subject name, you generate new cryptographic keys, that is a certificate
response that would match the old PSE does not match the new PSE.

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?

Select the correct PSE to import the certificate response. If you have
regenerated the PSE after generating the certificate request, you need
to generate a new certificate request, and therefore request a new
certificate from the CA.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.