When updating certificates in SDDC manager you may get a retrust error similar to the following after manually completing the retrust out of band.
Could not establish retrust due to: Retrust with <some_appliance_fqdn> failed, with error null
VMware Cloud Foundation 5.1.1
SDDC workflow issue.
To resolve this we need manually set the task to completed status in the SDDC manager database.
Contact Broadcom VCF GS Support to complete the removal task as it will require editing multiple tables in platform DB.