I have 15 different queues, where items are kept until batching is completed (60 items). When the batch is completed, a transporter picks the 60 items of a queue and take it to a combiner. Now, I want the combiner to combine those 60 items of input into only 1 output. I do not want to mix items of different queues because each queue contains a different item and they can't be mixed. I tried by creating a list, but it doesn't work.
Thanks in advance!