The organizational account CompanyExample (ownerUin: 12345678; appId: 1250000000) has a sub-account Developer that requires read/write permissions for all objects except the Object1 object in the dir1 directory of the Bucket1 bucket of the COS service in the Shanghai region under the CompanyExample account.

Solution A:

Step 1. Create the following policy according to the policy syntax:

 {
    "version": "2.0",
    "statement":
    [
     {
         "effect": "allow",
         "action": "cos:*",
         "resource": "qcs::cos:ap-shanghai:uid/1250000000:Bucket1-1250000000/dir1/*"
     },
     {
         "effect": "deny",
         "action": "cos:*",
         "resource": "qcs::cos:ap-shanghai:uid/1250000000:Bucket1-1250000000/dir1/Object1"
     }     
    ]
}

Step 2. Associate the policy with the sub-account. For more information on authorization, please see Authorization Management.

Solution B:

Set the policy and ACL in the COS Console. For more information, please see ACL Practices.