INVAID CHANGE : Sending invitation to client from manager account

[Subhasis Padhy]

While sending invitation manager account to client account getting following error

The change for mutate link is invalid
Request  failed with status "INVALID_ARGUMENT" and includes the following errors:
        Error with message "The change for mutate link is invalid.".
                On field: operation

Code is same as the official documentation. 

I have also tried to send invitation manually between accounts. It is sending. 
Its just google Ads api failing. 

def main(

client: GoogleAdsClient, customer_id: str, manager_customer_id: str

) -> None:

# This example assumes that the same credentials will work for both

# customers, but that may not be the case. If you need to use different

# credentials for each customer, then you may either update the client

# configuration or instantiate two clients, where at least one points to

# a specific configuration file so that both clients don't read the same

# file located in the $HOME dir.

customer_client_link_service: CustomerClientLinkServiceClient = (

client.get_service("CustomerClientLinkService")

)

# Extend an invitation to the client while authenticating as the manager.

client_link_operation: CustomerClientLinkOperation = client.get_type(

"CustomerClientLinkOperation"

)

client_link: CustomerClientLink = client_link_operation.create

client_link.client_customer = customer_client_link_service.customer_path(

customer_id

)

# client_link.status expects an enum value (int)

client_link.status = client.enums.ManagerLinkStatusEnum.PENDING.value

response: MutateCustomerClientLinkResponse = (

customer_client_link_service.mutate_customer_client_link(

customer_id=manager_customer_id, operation=client_link_operation

)

)

resource_name: str = response.results[0].resource_name

print(

f'Extended an invitation from customer "{manager_customer_id}" to '

f'customer "{customer_id}" with client link resource_name '

f'"{resource_name}"'

)

print("✅ Invitation sent successfully! Client should see the invitation in their Google Ads interface.")

# [END link_manager_to_client]