I am running a substrate private network on polkadot-v0.9.36 and observed something, i.e., after nominating 4 validators from a single nominator finalization got stopped which i didn't expected, as per the document of polkadot a nominator can nominate upto 16 validators but in my case it is not happening. Can anyone help in this.

1 Answer 1


I don't think this is related to the nominator.

Please check your validator configurations.

  • Make sure you put the session keys in their keystores
  • Make sure they are using different session keys
  • IIRC, there is an issue that you need to restart your node once you put the GRANDPA key in its keystore; otherwise, it won't work
  • 1
    I have done all the things right as you said but still getting the same issue. Commented Mar 23, 2023 at 12:59
  • Can you add more detail to the question? How do you check these?
    – AurevoirXavier
    Commented Mar 23, 2023 at 13:10

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