Why did I get "11011 - Create isolated account failed"?

API Spot/Margin API
1

Qn: Since May 15, 2021 08:00 UTC, the SAPI Create Margin Account endpoint (POST /sapi/v1/margin/isolated/create) has been deprecated and the users are suggested to directly call transfer API (POST /sapi/v1/margin/isolated/transfer). However, sometimes the following error comes out:

{
    "code": -11011,
     "msg": "Create isolated account failed."
}
2

This may be due to the incoming request limit at the server side. If the frequency is higher than once per second, the client side may get this error. As a temporary solution, the client side has to wait for a period of time and then retry.