OpenStack: Backup failing from what appears to be a bad response

OpenStack backup failing from what appears to be a bad response. From the DPE proxy logs, it appears the response in the Json file is missing a record; "AttributeError: 'json_record' object has no attribute 'tenant_id'"
DPE proxy logs, It appears the authentication is happening as admin.

ERROR    avamar.service.proxy No access to tenant xxxxxx (admin)
 WARNING  avamar.service.proxy Client error: Cannot authenticate as tenant: admin
 avamar.service.proxy ==== backup_finish tenant: xxxxx client: xxxx
 INFO     avamar.stack.keystone direct_scoped_token is : False

dpe_proxy_service.log

- INFO     avamar.controller.conventions TENANT source      : uuid (admin) 
- INFO     avamar.controller.conventions TENANT destination : uui (avamar) 
- INFO     avamar.stack.meta nova-metadata href: https://urldefense.com/v3/__http://DPE_Proxy:8775/latest/__;!!LpKI!iyNU2VxHCuJVJ02KdrcyVvK46FIjVmgyFLiRjxPS2O0G0btCMxahE9YkrHnmnv5rjkKlwJxSAyHCuUcqKQEa6al7$ xxx secret: xxxxxxyyyyy 
- INFO     avamar.controller.backup keystone: type(keystone):<class 'avamar.stack.base.json_record'> 
- INFO     avamar.controller.backup keystone_cred: type(keystone_cred):<class 'dict'> 
- INFO     avamar.controller.proxy PROXY INSTANCE UUID(DPE_proxy-name) 
- INFO     avamar.controller.backup ==== BACKUP START ==== 
- INFO     avamar.controller.backup INSTANCE/python3.6/site-packages/avamar/controller/backup.py", line 212, in _fetch     metadata = self.meta.inspect(instance.tenant_id, instance.id) AttributeError: 'json_record' object has no attribute 'tenant_id' uuid 
- ERROR    avamar.controller.backup Cannot fetch metadata for instance: uuid Traceback (most recent call last):   File "/usr/lib/python3.6/site-packages/avamar/controller/backup.py", line 212, in _fetch     metadata = self.meta.inspect(instance.tenant_id, instance.id) AttributeError: 'json_record' object has no attribute 'tenant_id' 
- ERROR    avamar.controller.backup A client or server error on backup-start Traceback (most recent call last):   File "/usr/lib

Backup_Admin role is not added as member of the project.

Change the Backup_admin role as member of the project.
See screenshots for example: