45003: Authorization Error

45003 indicates that the request was authenticated, but the credentials do not have permission to access the requested Flex resource or perform the requested action.

• Your account credentials do not have access to the requested Flex resource.
• The request is using the wrong Account SID, API Key, or Auth Token for the target resource.
• The resource belongs to a different account or subaccount.
• The action requires a role or permission that has not been granted.
• The request targets a Flex API endpoint or object that your credentials are not allowed to modify.

• Confirm that you are using the correct credentials for the account or subaccount that owns the resource.
• Verify that the resource identifier in the request is correct and belongs to your account.
• Review your Flex user roles and permissions, then update access as needed.
• If you are using API Keys, make sure the key is associated with the correct account and environment.
• Retry the request only after you confirm that the authenticated identity is allowed to access the target resource.
• If you manage multiple accounts or subaccounts, make sure the request is scoped to the intended account.

• Flex documentation
• Identity and Access Management
• API Keys overview