Azure traffic manager endpoint update fails with 'The resourceTargetId property is invalid or missing'

I am trying to update an Azure Traffic Manager endpoint with the Azure CLI, I run the following code:

 az network traffic-manager endpoint update \
      --name ${ENDPOINT_NAME} \
      --profile-name ${PROFILE_NAME} \
      --resource-group ${RESOURCE_GROUP} \
      --type azureEndpoints \
      --endpoint-status enabled \
      --set targetResourceId=${INGRESS_IP_ID}

The values for those different flags were obtained by previous calls to az network traffic-manager endpoint list But trying to set the endpoint targetResourceId to a different resource fails with this error:

Operation failed with status: 'Bad Request'. Details: The 'resourceTargetId' property of endpoint 'we' is invalid or missing. The property must be specified only for the following endpoint types: AzureEndpoints, NestedEndpoints. You must have read access to the resource to which it refers.

I can say with absolute certainty that the endpoint I am trying to update is an AzureEndpoint, and the resource I am trying to set it to exists in the same location as the endpoint itself. I have looked through the documentation and tried to google for this error, but haven't found anything useful so far.

I can produce this issue. Probably, you pass the --target-resource-id incorrectly. It should be a full resource Id instead of the resource name.

If you target a public IP as the endpoint, you can use the command to get the resource Id.

az network public-ip show --name <publicIPName> --resource-group <resourceGroupName> --query "id"