To renew your SMP certificate, you need to register the new certificate in DomiSML. Follow these steps:

1. Use the DomiSML Web Service: Call the PrepareChangeCertificate operation in the BDMSLServiceInterface to schedule the certificate change on a future date.
2. Ensure these pre-requisites are met:
   1. Your current certificate is still valid.
   2. The new certificate complies with permission rules in DomiSML.
   3. You have the new certificate file ready.
3. Important details:
   1. If a migrationDate is provided, the new certificate must be valid from that date.
   2. If no migrationDate is provided, the Valid From date in the new certificate will be used as the migration date, and this must be a future date.