diff --git a/CHANGELOG.md b/CHANGELOG.md
index f2b3009..5ae7410 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@
 * Generally improve filtering options
 * [178](https://github.com/mlebreuil/netbox-contract/issues/178) Add the possibility to filter on invoice number, and contract name through the API.
 * [176](https://github.com/mlebreuil/netbox-contract/issues/176) Order accounting dimensions in tables alphabetically.
+* [171](https://github.com/mlebreuil/netbox-contract/issues/171) It is now poaaible to define madatory accounting dimension by specifying their names in the 'mandatory_dimensions' list in the plugin settings. (see the "Customize the plugin" paragraph in the README.md file)
 
 ### Version 2.2.4
 
diff --git a/README.md b/README.md
index 7018f6e..011d8ab 100644
--- a/README.md
+++ b/README.md
@@ -46,10 +46,11 @@ PLUGINS_CONFIG = {
             "project": "", 
             "cost center": ""
         },
-        'mandatory_contract_fields': ['accounting_dimensions'],
+        'mandatory_contract_fields': [],
         'hidden_contract_fields': [],
-        'mandatory_invoice_fields': ['accounting_dimensions'],
+        'mandatory_invoice_fields': [],
         'hidden_invoice_fields': [],
+        'mandatory_dimensions': [],
     }
 }
 
diff --git a/src/netbox_contract/__init__.py b/src/netbox_contract/__init__.py
index d98e980..11568ca 100644
--- a/src/netbox_contract/__init__.py
+++ b/src/netbox_contract/__init__.py
@@ -22,6 +22,7 @@ class ContractsConfig(PluginConfig):
         'hidden_contract_fields': [],
         'mandatory_invoice_fields': [],
         'hidden_invoice_fields': [],
+        'mandatory_dimensions': [],
     }
 
 
diff --git a/src/netbox_contract/forms.py b/src/netbox_contract/forms.py
index c4185be..e7682b3 100644
--- a/src/netbox_contract/forms.py
+++ b/src/netbox_contract/forms.py
@@ -509,6 +509,12 @@ def clean(self):
             else:
                 dimensions_names.append(dimension.name)
 
+        # Make sure mandatory dimensions are present
+        mandatory_dimensions = plugin_settings.get('mandatory_dimensions')
+        for dimension in mandatory_dimensions:
+            if dimension not in dimensions_names:
+                raise ValidationError(f'dimension {dimension} missing')
+
     class Meta:
         model = InvoiceLine
         fields = [