SCEP protocol simplifies the certificate issuance process by using a URL and a shared secret to communicate with a PKI.
To configure SCEP
Navigate to Manager View | Home > Global Objects > Certificates.
Click on SCEP on the top right corner.
Fill the below details:
CSR List - Select a certificate signing request (CSR) from the list if one has been uploaded.
Click SCEP to apply the SCEP configuration.