diff --git a/lib/ansible/modules/network/aci/msc_label.py b/lib/ansible/modules/network/aci/msc_label.py
index 4fde746ef6..32c427bfe4 100644
--- a/lib/ansible/modules/network/aci/msc_label.py
+++ b/lib/ansible/modules/network/aci/msc_label.py
@@ -131,7 +131,7 @@ def main():
         msc.existing = msc.get_obj(path, id=label_id)
         existing_by_name = msc.get_obj(path, displayName=label)
         if existing_by_name and label_id != existing_by_name['id']:
-            msc.fail_json(msg="Provided label '{1}' with id '{2}' does not match existing id '{3}'.".format(label, label_id, existing_by_name['id']))
+            msc.fail_json(msg="Provided label '{0}' with id '{1}' does not match existing id '{2}'.".format(label, label_id, existing_by_name['id']))
 
     # If we found an existing object, continue with it
     if label_id:
diff --git a/lib/ansible/modules/network/aci/msc_role.py b/lib/ansible/modules/network/aci/msc_role.py
index 0878e3d380..400137a820 100644
--- a/lib/ansible/modules/network/aci/msc_role.py
+++ b/lib/ansible/modules/network/aci/msc_role.py
@@ -163,7 +163,7 @@ def main():
         msc.existing = msc.get_obj(path, id=role_id)
         existing_by_name = msc.get_obj(path, name=role)
         if existing_by_name and role_id != existing_by_name['id']:
-            msc.fail_json(msg="Provided role '{1}' with id '{2}' does not match existing id '{3}'.".format(role, role_id, existing_by_name['id']))
+            msc.fail_json(msg="Provided role '{0}' with id '{1}' does not match existing id '{2}'.".format(role, role_id, existing_by_name['id']))
 
     # If we found an existing object, continue with it
     if role_id:
diff --git a/lib/ansible/modules/network/aci/msc_site.py b/lib/ansible/modules/network/aci/msc_site.py
index a268e542cd..a453282577 100644
--- a/lib/ansible/modules/network/aci/msc_site.py
+++ b/lib/ansible/modules/network/aci/msc_site.py
@@ -160,7 +160,7 @@ def main():
         msc.existing = msc.get_obj(path, id=site_id)
         existing_by_name = msc.get_obj(path, name=site)
         if existing_by_name and site_id != existing_by_name['id']:
-            msc.fail_json(msg="Provided site '{1}' with id '{2}' does not match existing id '{3}'.".format(site, site_id, existing_by_name['id']))
+            msc.fail_json(msg="Provided site '{0}' with id '{1}' does not match existing id '{2}'.".format(site, site_id, existing_by_name['id']))
 
     # If we found an existing object, continue with it
     if site_id:
diff --git a/lib/ansible/modules/network/aci/msc_tenant.py b/lib/ansible/modules/network/aci/msc_tenant.py
index 5417d35844..b4b127f40e 100644
--- a/lib/ansible/modules/network/aci/msc_tenant.py
+++ b/lib/ansible/modules/network/aci/msc_tenant.py
@@ -141,7 +141,7 @@ def main():
         msc.existing = msc.get_obj(path, id=tenant_id)
         existing_by_name = msc.get_obj(path, name=tenant)
         if existing_by_name and tenant_id != existing_by_name['id']:
-            msc.fail_json(msg="Provided tenant '{1}' with id '{2}' does not match existing id '{3}'.".format(tenant, tenant_id, existing_by_name['id']))
+            msc.fail_json(msg="Provided tenant '{0}' with id '{1}' does not match existing id '{2}'.".format(tenant, tenant_id, existing_by_name['id']))
 
     # If we found an existing object, continue with it
     if tenant_id:
diff --git a/lib/ansible/modules/network/aci/msc_user.py b/lib/ansible/modules/network/aci/msc_user.py
index b58c544075..230afb7144 100644
--- a/lib/ansible/modules/network/aci/msc_user.py
+++ b/lib/ansible/modules/network/aci/msc_user.py
@@ -171,7 +171,7 @@ def main():
         msc.existing = msc.get_obj(path, id=user_id)
         existing_by_name = msc.get_obj(path, username=user_name)
         if existing_by_name and user_id != existing_by_name['id']:
-            msc.fail_json(msg="Provided user '{1}' with id '{2}' does not match existing id '{3}'.".format(user_name, user_id, existing_by_name['id']))
+            msc.fail_json(msg="Provided user '{0}' with id '{1}' does not match existing id '{2}'.".format(user_name, user_id, existing_by_name['id']))
 
     # If we found an existing object, continue with it
     if user_id: