Factorio Forums

For the reason unknown, fluid wagons sometimes arrive at requester stations thinking that they're providers.
For example here, the little silly train came at the station "Yee Lee" thinking that it can give him some 10357 water, while this station doesn't serve as a provider but rather as a requester that requests 80k of water.

Enable logging and attach the logfile with a post containing the stop name where this happened while logging.

Sure thing.
Log in the attachments.
Name of the station: Gameonlp
Here is a screenshot depicting the station and two trains with the same unusual behaviour:



And if necessary, I can provide you a save file.

You are using a 1k provide and request limit at that stop, probably the global defaults.
Set them to higher values, ideally 1 full train for request and more than the stop could ever hold for provide.

After a timed out delivery several trains delivered, raising the available petroleum in the stop over 1k turning it into a provider.