Starling does not support running balances when calling for /transactions, which is why users will not be able to see a running balance for this call.
What to do next?
If you require the account balance, you can call for the /balance endpoint. You can find more information about this here.
If you need more information
Do you want to know the banks and PSPs we support in the UK? Click here.
For known issues and workarounds currently ongoing with banks, click here.