when i use POST lists/members/create_all API it give error like this {"errors":[{"message":"Could not authenticate you","code":32}],"httpstatus":401}

[jigar_0809]

POST lists/members/create_all API gives an error {“errors”:[{“message”:“Could not authenticate you”,“code”:32}],“httpstatus”:401} . all required parameter also given to it. help plz !!!