Default Roles are not getting assigned to users through CUP

We have a scenario wherein the end users are submitting CUP Request for Id creation without specifying any Roles to it.

When Users are submitting requests Default Roles (without any approver) are automatically assigned to the Request.

When the request is moving to First Stage, approver is assigning few more roles to the CUP Request.

At the Final stage, Final Approvers are approving/rejecting Roles.

Issue is that if roles are rejected by approvers then also Id of the end user should get created in backend with Default Roles.

But the id is not getting created.

Please help!!!