While changing Master Image in AWS throwing an error "Failed to update the master image associated with the provisioning scheme." Export of error details: Transaction ID: xxxxxxxxxxxxxxxxx Action Name: MC_UpdateMachineCatalog Exception: StudioErrorId : ProvisioningTaskError ErrorCategory : NotSpecified TaskState : FailedToCreateImagePreparationVm TaskStateInformation : Terminated ErrorId : FailedToCreateImagePreparationVm Operation : PreparingMasterImage ErrorMessage : No facility available for disk upload. Unable to create any functioning volume service VMs. Object reference not set to an instance of an object. Error Source : CitrixOrchestration

https://docs.aws.amazon.com/controltower/latest/controlreference/ct-ec2-pv-4.html

[CT.EC2.PV.4] Require that Amazon EBS direct APIs are not called - AWS Control Tower

This control disallows usage of all EBS direct APIs.

Problem Cause

Security change in AWS
SCP in place to explicitly deny ebs: startsnapshot

https://docs.citrix.com/en-us/citrix-daas/install-configure/connections/connection-aws.html#minimal-iam-permissions-policy