Cbn auctions 250m to bdcs nationwide

It appears that you're referring to a news article or announcement about the Central Bank of Nigeria (CBN) auctioning 250 million naira to Bureau De Change (BDCs) nationwide.

Here's a breakdown of what this means:

It's worth noting that the CBN has been implementing various measures to stabilize the foreign exchange market in recent times, including the introduction of the Investors and Exporters (I&E) window, which allows for the trading of foreign currencies at market-determined rates.