The issue has been identified and a fix prepared, which will be deployed after market closed.
Posted Jan 18, 2022 - 12:40 EST
Investigating
Starting on January 18th, 2022 clients may experience an issue when placing an order with a suffix. Clients may have their orders rejected when they enter an order with a suffix. For example, RDS.A or BRK.B
We are currently investigating this issue.
Posted Jan 18, 2022 - 11:49 EST
This incident affected: Live Trading API (Orders API) and Paper Trading API (Paper Order API).