Using iControl user with Manager role unable to create a pool

Hello,

I've created a user with Manager Roles and a separate partition on F5 LTM(11.5.1) and while trying to create a pool using an API as below. It fails.. Please look into it and guide me to get this working.

curl -k -u www01:abcd123 -H "Content-Type: application/json" -X POST -d '{"name":"testapi-pool","partition":"test-part","members":[ {"name":"192.168.25.32:80","description":"first member"} ]' https://192.168.0.1/mgmt/tm/ltm/pool

{"code":401,"message":"Authorization failed: user=www01 resource=/mgmt/tm/ltm/pool verb=POST Uri:"> Referer:null","originalRequestBody":"{\"name\":\"testapi-pool\",\"partition\":\"test-part\",\"members\":[ {\"name\":\"192.168.25.32:80\",\"description\":\"first member\"} ]","restOperationId":22177828,"errorStack":["java.lang.SecurityException: Authorization failed: user=www01 resource=/mgmt/tm/ltm/pool verb=POST Uri:"> Referer:null","at com.f5.rest.workers.ForwarderWorker.evaluatePermission(ForwarderWorker.java:370)","at com.f5.rest.workers.ForwarderPassThroughWorker.onForward(ForwarderPassThroughWorker.java:150)","at com.f5.rest.workers.ForwarderPassThroughWorker.onPost(ForwarderPassThroughWorker.java:300)","at com.f5.rest.common.RestWorker$4.run(RestWorker.java:638)","at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)","at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)","at java.lang.Thread.run(Unknown Source)\n"]}

Thanks, Raj