I'm defining my multi-asset with partitions like so

@multi_asset(
        partitions_def=DailyPartitionsDefinition(
            start_date=start_date),
        code_version="1",
        outs={"zendesk_chats": AssetOut(is_required=True, io_manager_key=io_manager_key),
              "failed_zendesk_chat_ids": AssetOut(is_required=False,  io_manager_key=io_manager_key)}
    )
    def zendesk_chats(context):

and I am getting

The output has no asset partitions

Hi Liam - where are you seeing that error? Do you have a self-contained code snippet we could use to reproduce your issue?

Hi @sandy,I realized it ws failing because of

context.asset_partition_key_for_output

not being given an output_key,