How many limit times for call post api to refresh the dataset

HI,

I have python script to call post api for refresh the dataset in workspace, between testing I have got the error as below, I am not sure did it have the limit times to call? and please advise, How long should I to plan delay the script?

Error,

HTTPError(http_error_msg, response=self)
requests.exceptions.HTTPError: 429 Client Error: for url: https://api.powerbi.com/v1.0/myorg/groups/1a93493a-5009-437b-bbc2-7b8aa2288d0c/datasets/f0f7514d-d70d-48a9-a38d-c58d0fb251ea/refreshes