diff --git a/library/decort_account_info.py b/library/decort_account_info.py
index b2d8661..c1f81e4 100644
--- a/library/decort_account_info.py
+++ b/library/decort_account_info.py
@@ -304,6 +304,13 @@ class DecortAccountInfo(DecortController):
 
     @property
     def mapped_rg_params(self) -> None | dict:
+        """
+        Map the module parameter `resource_groups` to
+        parameters dictionary for the method
+        `DecortController.account_resource_groups`
+        (excluding for `account_id`).
+        """
+
         input_params = self.amodule.params['resource_groups']
         if not input_params:
             return input_params