We have a use case to migrate 20+ standalone GCP projects (with no special resources like shared VPC etc so very basic resources are present in the project ) to migrate to a new Org node. Interestingly 19 projects migrated without any error and 1 specific project failed with attached error although all projects have same permissions and migrated by same user.The user who is doing the migration has owner permissions and also predefined IAM project mover role. The permission "resourcemanager.projects.update" that is shown in error below is part of the Project Mover predefined IAM role as mentioned in this link.