RMD withdraw reporting

I have multiple retirement accounts with different brokerages. My primary broker told me that I could do the RMD for all accounts (from all brokerages) from just one brokerage. Turbo Tax is asking if the account was subject to an RMD and if so how much was withdrawn. It was subject to RMB but nothing was withdrawn since it came out of a different retirement account at a different brokage; how do I report / answer this question correctly?

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