Login to SAP Router Server and stop Router service.
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Take a backup of file in usr/sap/saprouter : Cred_v2, srcert, certreq, local.pse
Also you can take a copy of SAPRouter folder
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Run the following command to generate a certificate in OS level.
sapgenpse get_pse -v -r certreq -p local.pse
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Enter the new PIN for PSE file two times
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Give DSN and press Enter. Must be the same as in the SAP support portal.
CN=xxxxx, OU=xxxxx, OU=SAProuter, O=SAP, C=DE
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It will create a new Certificate file certreq in the sap router file system.
Open the file certreq and copy the content or code from that file.
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Open Support portal and navigate to SAP Router page where your Router is configured and click on Submit CSR
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Paste the copied data from here as shown below and hit on Request Certificate.
This should be deleted if there is a blank line at the end.
The pasted block should finished immediately after “—–END CERTIFICATE REQUEST—–“
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