the business partner Pornpan In-iam, for whom you are registered as sponsor in the SCD, has performed a PKI transaction at the PKI Self Services (https://pkiss.siemens.com).
The business partner performed the transaction: "Self management - My cert is due to expire (I got an expiry notification)"
If this happened without your accordance, please clarify the situation with your business partner.
Please direct further questions to your local helpdesk.