Merge pull request #17476 from anuraaga/patch-1

Clarify minimum duration for assume_role setting

website/docs/index.html.markdown

@@ -369,7 +369,7 @@ for more information about connecting to alternate AWS endpoints or AWS compatib
 
 The `assume_role` configuration block supports the following optional arguments:
 
-* `duration_seconds` - (Optional) Number of seconds to restrict the assume role session duration.
+* `duration_seconds` - (Optional) Number of seconds to restrict the assume role session duration. You can provide a value from 900 seconds (15 minutes) up to the maximum session duration setting for the role.
 * `external_id` - (Optional) External identifier to use when assuming the role.
 * `policy` - (Optional) IAM Policy JSON describing further restricting permissions for the IAM Role being assumed.
 * `policy_arns` - (Optional) Set of Amazon Resource Names (ARNs) of IAM Policies describing further restricting permissions for the IAM Role being assumed.