Hello @prabhat tunuguntla ,
Welcome to Q&A Forum!
As stated in the official article, this is a rule to prevent adding new sites to content databases over 100 GB and then moving some site collections to other databases.
But it's worth noting that you can no longer add new sites to databases over 100 GB.
In regards to what you said about being able to create subsites after repairing, it's because the content database doesn't exceed 100 GB at this point.
Thanks,
Echo Du
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Hi @prabhat tunuguntla ,
Would you tell me whether your issue has been resolved or have any update?
I am looking forward to your reply.
Have a nice day!
Thanks,
Echo Du