# Help:VE143

From TrainzOnline

Possible running number list is too large, the set must contain less than 20000 possibilities.

The 'running-numbers' tag within the 'vehicle-running-numbers' container of config.txt for a traincar asset must follow a specific format. In particular, the total possibilities for a running number for the locomotive must be less than 20,000. For instance:

vehicle-running-numbers { running-numbers "862-86212" }

will generate the error

- VE143: Possible running number list is too large, the set must contain less than 20000 possibilities.

The fix is to adjust the numbers in the tag, in this case

vehicle-running-numbers { running-numbers "86200-86212" }

The maximum of 20,000 covers all possible numbers, which may extend across multiple items in the tag.

For details of the rules relating to the formatting of this tag value, see vehicle running numbers.