12345.fsm Hi guys,
I meet a problem in my program, there always a reminder shows that the label dose not exist between airline and agents, while the financial table shows that the label is identified and count as cost. Thus, i would like to figure out what is going on.
The sources and queues at the start of your model all use the label "Type" in their Send to Port fields. That label does not exist on the items which leads to the error messages.
The financial chart has nothing to do with this.
Thanks for replying, while there is still problems of label. I changed all the output to the "by expression" and clicked "item'", but it still shows that the label does not exist in the airline part. 
The part of the error message you marked tells you where (in what code) the error happened. The first sentence tells you where the label is missing.
Either create the dueTime label on the pallets as well (even though it won't be used later) or add a condition to the entry trigger that the item must not have entered through the first port for the rest of the code to be executed.
if(port != 1)
{ ... }
thanks for help, the problem solved. Well, the coding of the airlines seems in a wrong logic, i would like to edit it.
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