I'm trying to create my first release pipeline, however I keep getting this error:

> 
> Exception Message: The pipeline is not valid. Job Phase\_1: Step AzureResourceGroupDeployment input ConnectedServiceName references service connection 
>  which could not be found. The service connection does not exist or has not been authorized for use. For authorization details, 
>  refer to <https://aka.ms/yamlauthz>. (type PipelineValidationException)
> 
> 
> 

I've tried to follow the instructions in the link, however the "Authorize Resources" button does not exist.

"Allow all pipelines to use this service connection" is already enabled and I have recreated the deployment task after enabling this.

How do I authorise the resource?