diff --git a/changelogs/fragments/47668-aci_switch_leaf_selector-support_empty_policy_group.yaml b/changelogs/fragments/47668-aci_switch_leaf_selector-support_empty_policy_group.yaml
new file mode 100644
index 00000000000..b9ff26f81b2
--- /dev/null
+++ b/changelogs/fragments/47668-aci_switch_leaf_selector-support_empty_policy_group.yaml
@@ -0,0 +1,2 @@
+bugfixes:
+- aci_switch_leaf_selector - Support empty policy_group
diff --git a/lib/ansible/modules/network/aci/aci_switch_leaf_selector.py b/lib/ansible/modules/network/aci/aci_switch_leaf_selector.py
index c092334edb0..42e3286fe6f 100644
--- a/lib/ansible/modules/network/aci/aci_switch_leaf_selector.py
+++ b/lib/ansible/modules/network/aci/aci_switch_leaf_selector.py
@@ -283,31 +283,37 @@ def main():
     aci.get_existing()
 
     if state == 'present':
+        # Build child_configs dynamically
+        child_configs = [
+            dict(
+                infraNodeBlk=dict(
+                    attributes=dict(
+                        descr=leaf_node_blk_description,
+                        name=leaf_node_blk,
+                        from_=from_,
+                        to_=to_,
+                    ),
+                ),
+            ),
+        ]
+
+        # Add infraRsAccNodePGrp only when policy_group was defined
+        if policy_group is not None:
+            child_configs.append(dict(
+                infraRsAccNodePGrp=dict(
+                    attributes=dict(
+                        tDn='uni/infra/funcprof/accnodepgrp-{0}'.format(policy_group),
+                    ),
+                ),
+            ))
+
         aci.payload(
             aci_class='infraLeafS',
             class_config=dict(
                 descr=description,
                 name=leaf,
             ),
-            child_configs=[
-                dict(
-                    infraNodeBlk=dict(
-                        attributes=dict(
-                            descr=leaf_node_blk_description,
-                            name=leaf_node_blk,
-                            from_=from_,
-                            to_=to_,
-                        ),
-                    ),
-                ),
-                dict(
-                    infraRsAccNodePGrp=dict(
-                        attributes=dict(
-                            tDn='uni/infra/funcprof/accnodepgrp-{0}'.format(policy_group),
-                        ),
-                    ),
-                ),
-            ],
+            child_configs=child_configs,
         )
 
         aci.get_diff(aci_class='infraLeafS')